1.
Yeah! He's a terrible singer .
唷！ 他唱得真差劲。
2.
Now then, pull up, comrades
喂，同志们，使劲拉！
3.
More people mean a greater ferment of ideas, more enthusiasm and more energy.
热气高, 干劲大。
4.
Very well, now put your best foot forward.
很好，再加一把劲。
5.
The road slopes up at this point.Paddle hard.
这要上坡，用劲登。
6.
Giving real encouragement also requires us to do our work in a correct manner.
真正鼓实劲，不鼓虚劲，还要求我们的干劲是对头的。
7.
This is an awkward spade.
这把锹使起来不得劲。
8.
Feverish and excited, I rang at the door.
我兴奋地一个劲拉门铃。
9.
He studies English without difficulty.
他学英语不太费劲。
10.
If you strain your eyes,you can just see the church.
你使劲看,就能见到教堂。
11.
(of a breeze)blowing strongly
（指风）强劲的,猛烈的.
12.
Don't let down now, just when the job's nearly finished.
活就快要完了，不要松劲。
13.
You must not relax your efforts for a moment.
你一会儿也不要松劲。
14.
Don't slacken up our efforts when victory is in sight.
胜利在望，我们不能松劲。
15.
You shouldn't slacken off in your study.
你在学习上不应松劲。
16.
bending stiffness
抗挠劲度,抗弯硬挺度
17.
The Mayor rubbed his cheek and tried to think.
市长摸摸脸使劲想一想。
18.
With an effort she restrained herself.
她使劲控制住了自己。