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1·The mechanics work hard to keep the helicopters airworthy.

机修工们为了保障直升机的适航性而努力工作着。《柯林斯英汉双解大词典》

2·He succinctly summed up his manifesto as Work hard, train hard and play hard.

他把自己的宣言简明地概括成了“努力工作，努力训练，努力玩耍。”《柯林斯英汉双解大词典》

3·After missing a term through illness he had to work hard to catch up with the others.

他因病休学一学期，不得不努力学习好赶上别的同学。《牛津词典》

4·The president's message was that everyone would have to work hard together to rebuild the economy.

总统所传达的信息是每个人都应一起努力工作重建经济。《柯林斯英汉双解大词典》

5·You'll get good grades if you work hard.

如果你努力学习，你会取得好成绩的。

6·We all work hard in our school.

我们在学校都努力学习。

7·He could work hard and study hard.

他还可以一边努力干活，一边努力学习。

8·Work hard at your lessons.

努力学功课。

9·Bees work hard in flowers.

蜜蜂在花丛里辛勤地工作。

10·Work hard and try to make a living.

努力工作，努力谋生。

辛苦

1·Yet that isn't enough, since many people work hard for decades without approaching greatness or even getting significantly better.

然而这还不够，许多人数十年辛苦，仍然未能取得杰出成就，甚至没有取得重大进步。

2·Life after Boarding School for Jane Addams: Jane Addams went on to study medicine after college. But she found the work hard and uninspiring.

离开寄宿学校后：简-亚当斯毕业后继续深造医学，但这种生活辛苦又机械，毫无新鲜感可言。

3·You guys didn't work hard all this year just to get ready for some tests.

你们可不只是为了准备这些考试才辛苦一整年的。

4·The poor peasant had to work hard to raise his family.

那可怜的农民得辛苦干活来养家。

5·On the one hand, he needs to work hard to support his family. On the other hand, he has to make time for his children.

他一方面需要辛苦赚钱养家。另一方面他又必须腾出时间给小孩。

苦干

1·To reach your goals, work hard, participate, practice, and do the best you can.

要达到你的目标，你就必须苦干，参与，练习，以及尽你所能做到最好。

2·Stay here, work hard to always be more persuasive than the rhetoric.

干下去，埋头苦干永远比夸夸其谈更有说服力。

3·To reach our goals, we must work hard, participate, practice, and do the best we can.

要达成目标，我们就必须苦干、参与、实践和全力以赴。

4·To reach your goal, work hard, participate, practice, and do the best you can.

要达成你的目标，你就必须苦干、参与、操练，并尽所能做到最好。

操劳

1·The only thing we can remember is a kind-hearted mother's face, a pair of hands for us to work hard, a birthday;

我们唯一能记住的就是母亲那一张慈祥的脸，一双为我们操劳的手，一个生日；