It is often said that necessity is the mother of invention.

常言道，需要是创造之母。

The saying " necessity is the mother of invention" means that when people really need to do something, they will find a way to do it.

“需求是发明之母”这个表达的意思说，当人们真的需要做某件事时，他们就会想出做的办法。

No man could more verify the truth of these two maxims, " That nature is very easily satisfied;" and, " That necessity is the mother of invention" .

没有人能更证实这两条格言的真实性，“天性是很容易满足的；”并且，“需要是发明之母”。