An analogy is to building a space rocket: you need a huge rocket engine, and you need a lot of fuel.

以造火箭来打个比方：你需要一台巨大的火箭引擎，你还要有足够的燃料。

youdao

An analogy is to building a space rocket: you need a huge rocket engine, and you need a lot of fuel.

以造火箭来打个比方：你需要一台巨大的火箭引擎，你还要有足够的燃料。

youdao