Definition: to protect someone or something from being attacked, especially by fighting Level: B1
如果我们没有军队，我们怎么能保卫我们的家园？
How can we ___defend our homeland if we don't have an army?
我去上空手道课学习如何保护自己。
I'm going to karate lessons to learn how to ___defend myself.
白细胞帮助身体防御感染。
White blood cells help ___defend the body against infection.
