投身

He took up the cause with evangelical fervor.

他以传道者般的热情投身于这一事业。

All the causes seem equally deserving.

看所有的这些事业都同样值得投身。

You say that cruelty to animals is wrong, so why not have the courage of your convictions and join our campaign?

既然你说残忍地对待动物是不对的，那为什么有勇气做你认为正确的事，投身到我们的运动中呢？

Involving himself in the Liberation War at the age of 16 in literary and art work, later as editor and playwrite.

16岁投身解放战争，文，后编辑、编剧。