There must be both individual effort and mutual help.

既要各自努力， 也要彼此帮助。

Coordination and mutual help between factories have become the order of the day.

厂际协作和互相帮助已蔚然成风。

That essence is mutual help.

本质就是互相帮助。

"We can give mutual help to each other," I replied.

“我们可以互相帮助。”我回答道。

They formed loose leagues of mutual help under chosen leaders.

他们在推选的首领的领导下，组成了松散的互助联盟。