投身

He took up the cause with evangelical fervor.

他以传道者般热情投身于这一事业。

All the causes seem equally deserving.

看来所有这些事业都同样值得投身。

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，艺工，后编辑、编剧。

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

既你说残忍地待动物是，那为什么没有勇气做你认为正确事，投身到我们运动中来呢？