tap/knock/rap.导航词义：敲打

1. tap:v. 轻拍，轻敲.指用手指等轻叩、轻拍或轻敲，意在引人注意，或表示爱抚等情感。

He tapped me on the back.

他轻轻地拍了拍我的后背。

She tapped the table with her fingers.

她用手指敲打桌子。

He tapped his forehead knowingly.

他会心地拍了拍前额。

2. knock:v. 敲击，敲打.指用手掌、拳头或硬物用力敲打，以引起他人的注意或重视。

Please knock before you enter.

进来前请先敲门。

He wondered whether it would be proper to knock at her door.

他不知道敲她的门是否恰当。

I heard him knock his pipe out on the mantelpiece.

我听见他在壁炉架上磕打烟斗。

3. rap:v. 轻敲，拍击.指用指关节、笔等快速轻敲或急拍，意在引人注意或表示某种情感。

The chairman rapped on the table for order.

主席敲桌子要求听众安静。

Angrily, she rapped on his window.

她生气地敲他的窗户。

He would rap his fingers on the desk when he had difficulty working out a math problem.

他做数学题遇到困难时总是要敲书桌。

全部

1·Is the tap water safe to drink?

这自来水喝了不会闹病吧？《牛津词典》

2·A tap in the kitchen was dripping.

厨房的水龙头在滴水。《柯林斯英汉双解大词典》

3·Who left the tap running?

谁没关水龙头？《牛津词典》

4·Filtered water is always on tap here.

在这儿，过滤过的水随时可以从阀门流出。《柯林斯英汉双解大词典》

5·The tap was dripping.

龙头在滴水。《牛津词典》

6·The water came out of the tap in spurts.

水急速地从水龙头里喷出来。《牛津词典》

7·They worried about the purity of tap water.

他们担心自来水是否洁净。《柯林斯英汉双解大词典》

8·She turned off the tap and dried her hands.

她关上水龙头，把手擦干。《柯林斯英汉双解大词典》

9·You can ask for a chemical analysis of your tap water.

你可以要求给你的自来水做化学分析。《牛津词典》

10·The government passed laws allowing the police to tap telephones.

政府通过了允许警察窃听电话的法律。《柯林斯英汉双解大词典》

水龙头

1·The water came out of the tap in spurts.

水急速地从水龙头里喷出来。《牛津词典》

2·This tap turns easily.

这个水龙头容易转动。

3·Television is a one-way tap flowing into our homes.

电视是一个流入我们家庭中的单向水龙头。

4·Once the water is shut off inside, go outside and open the outside taps as well. This will drain any water remaining in the pipe or in the tap, so there's nothing to freeze.

一旦关闭这只阀门切断室内水路后，立即到室外打开水龙头，排掉积存在管子里或者水龙头里的水，以确保无可结冰的物质。

5·You left the cold tap running.

你任由寒冷的水龙头流淌。

踢踏舞

1·As her daddy opened the trunk, he pulled out a black top hat, a long black cane and black tap shoes.

她爸爸打开后备箱，拿出一顶黑色的礼帽、一根长长的黑色手杖和一双黑色的踢踏舞鞋。

2·If you speak German, if you know how to fly an airplane, if you can type 60 words a minute, or if you can tap dance, it’s because of the programming that has been uploaded into your mind.

如果你说德语，如果你知道如何开飞机，如果你能在一分钟打60个字或者你能跳踢踏舞，这是因为相应的软件已经安装在你的思维之中。

3·Both a lively here tap, and a dignified luxuriant ballet, and dynamic jazz dance and modern dance.

这里既有轻松活泼的踢踏舞，又有凝重华丽的芭蕾舞，还有充满动感的爵士舞和现代舞。

4·There I trained in tap, jazz, ballet, modern and street dance.

在哪里我在踢踏舞，爵士舞，芭蕾舞，现代舞和街道舞受过训练。

5·There's ballroom dancing, disco, tap, jazz... And tango. Tango sounds interesting, isn't it from Argentina?

有交际舞、迪斯科舞、踢踏舞、爵士舞……还有探戈。探戈听起来很有趣，是从阿根廷传过来的吗？

抽头

1·Adopting DC electric reactor with center tap can change the welding machine's dynamic characteristic conveniently.

采用带中心抽头的直流电抗器，可以方便的改变焊机动特性。

2·Each ladder input's weighting factor corresponds to one of the digital filter tap coefficients.

每个梯形输入的加权因数与一个数字滤波器抽头系数对应。

3·The characteristics of dual tap filter and predicted error filter are analyzed, which are auto-adapted filters, and a numerical simulation is performed on computer.

对双向抽头滤波器和预测误差滤波器这两种自适应滤波器的特性进行了分析，并在计算机上进行了数值仿真。

4·Employing the Fast Fourier Transform Algorithm (FFT) to determine the initial tap coefficients of equalizers is fundamentally different from using the current iteration method.

用快速离散傅立叶变换(FFT)的方法确定均衡器的初始抽头系数，它区别于目前常用的迭代算法。

5·Here is a new method about the resonant network design for the capacitor tap, this can decide very quickly and accurate Capacitance Value.

本文对电容抽头负载部分接入的谐振网络设计提出了一种准确而快速地确定回路电容值的方法。

轻拍

1·The use of rhythm may tap into powerful nonverbal responses, much the way music does.

韵律可以轻拍成有力的非言语响应，就像音乐那样。

2·Gesture: Tap your forehead with bunched fingers.

手势：手指聚拢轻拍额头。

3·Sometimes I would tap their hands when they made troubles.

当他们惹祸时，有时候我会轻拍他们的手。

4·Usage: Apply evenly to face after cleanser, tap and gently massage to absorb.

使用方法：洁面后，取适量本品均匀涂于面部，轻拍至吸收。

5·Wedding held at a procedure by which the cantor choir instructed the groom to take good care and protection of his wife, the bride and groom would tap to show respect.

婚礼举行时，其中有一项程序是由诗歌班的领唱者训示新郎要好好照顾和保护妻子，新娘则会轻拍新郎以示尊重。

敲打

1·Gently tap the egg shells with the back of a teaspoon and crack the shells.

用茶匙轻轻敲打蛋壳，使蛋壳破裂。

2·When we introduced other animals into the petri dish it would go over and tap the animal [with its venom-filled claws].

当我们引入其他动物到培养皿中时，伪蝎会走过去(用它有毒的钳子)敲打这些动物。

3·The thumb-generation who can tap out atext-message under their desks while taking notes with the other hand — they’rein for it, too.

拇指一代，能一手在他们课桌下敲打出短信，还能用另一只手记笔记，他们确实很牛逼。

4·And when you need that energy, you tap it.

需要这能量时敲打它。

5·Use hammer and brass drift to tap ring gear onto the flywheel.

用锤子和黄铜冲销轻轻敲打环齿轮进入飞轮。

塔

1·Tap on the menu point Start in the main window.

塔上的菜单上指向“开始”，在主窗口。

2·Tap on each section for detailed info.

塔上每一节的详细信息。

3·Get ready to tap the night away in the Charleston tap Shoe!

准备挖掘在查尔斯顿塔擦鞋的一整晚！

4·Tap one the corners on your touch pad and that program should load up for you!

塔的一个角落，对你的触摸面板，并计划应负荷，为你！

5·My training includes Jazz, Contemporary, Street Jazz, Tap and Ballet which I don't particularly like.

我培训内容包括爵士乐，现代，爵士街，塔和芭蕾舞我并不特别喜欢。

轻敲

1·I tap my finger on the screen, telling the computer brains underneath it got this suggestion right.

我用手指轻敲屏幕，发出指令确认了屏幕下的计算机大脑的这个提议。

2·Tap a show’s name to reveal a Record button (and a Record Series button).

轻敲一个节目名，会出现一个“录制”按钮（录制系列按钮）。

3·Reserve one meter sunshine and tap my heart window.

预订一米阳光，轻敲我的心窗。

4·Elated wind, tap my heart window.

欢畅的风，轻敲我的心窗。

出钢

1·Actual applied result shows that actual tap temperature drop coincides with analysis calculated value. Analysed conclusions have great guidance significance to actual operation.

实际应用情况表明：实际出钢温降与分析计算值基本吻合，结论对实际操作具有指导意义。

2·Meanwhile, in contrast with VOD, VODC equipment has function of converter, so it is easier to measure temperature, discharge slag, sample and tap in the smelting process.

同时，因其较VOD设备增加了转炉功能，则为工艺过程中的测温、排渣、取样、出钢也带来了方便。

轻击

1·If you tap somebody on the knee, your leg will jump out.

如果你轻击某人的膝盖，小腿就会弹出去。

2·Tap the widget to display full screen version of pictures of your children, friends, kids, pets, babies, holidays, etc.

轻击该工具，就能全屏显示你孩子、好友、小孩、宠物、婴儿、假日等照片。

3·If you tap a glass on its side, it gives off a nice ringing sound.

如果你轻击玻璃杯边，它会发出清脆的声响。

(1)tap water自来水；非蒸馏水

(1)tap into挖掘；接进

(1)on the tap[英国俚语]在乞讨东西

(1)tap in[篮球]托球入篮；[高尔夫]将很短的推击击球入洞；按键输入

(1)tap on在…上轻敲

(1)tap changer抽头转换开关；分接头变换器