1.预防用英语怎么说

预防：

1. to prevent

2. to take precautions against

3. to protect

4. to guard against

例句与用法：

1. 请吃些预防药吧。

Please take some preventive medicine now.

2. 这种疫苗用以为全体居民预防传染病.

The vaccine was used to protect the whole population against infection.

3. 预防胜于治疗（治病不如防病）。

Prevention is better than cure.

4. 我们不得不采取预防措施。

We had to take preventive measures.

5. 该报道对缺乏安全预防措施一事严加指责.

The report was scathing about the lack of safety precautions.

2.避免用英语怎么说

avoid

及物动词 vt.

1.避开， 避免， 预防

I avoided him as much as possible.

我尽可能地躲开他。

Try to avoid accidents.

尽量防止事故。

He avoided answering my questions.

他避而不答我的问题。

2.【法律】宣布（判决、抗辩等）无效；使无效；废止，撤销

3.躲开，避开（人、事物、地方），回避