之后，我又去了四(五)班，那里是投沙包看上去危机四伏，后来我一个劲得一下子就把五个沙包扔了出去，结果只投进了一个，得了一分。

After, I went to the 4 (5) classes, there is cast sandbags looks dangerous, then I just have to throw out five sandbags, immediately the result into a new one, only got one point.

youdao

有两个人病了没上班，所以我们得加把劲干。

We'll have to work all the harder with two people off sick.

《牛津词典》

这是因为他的右手仍然有些无力，握桨的时候得格外加把劲。

That is because his right side is still slightly numb, causing him to grip the oar a little tighter with his right hand.

youdao