将“needful"翻译成中文

Water is much needed.

水是非常必要的。

The responsibility for poverty eradication rested primarily with national Governments, but they needed support from the international system.

消除贫穷的责任首先应由国家政府来承担,但他们需要国际体系的支持。

This kind of medicine can temporarily alleviate pain. If you need it, just take it.

这种药可以暂时缓解身体的疼痛,你需要的话就拿去吧。