You have to spit out any food leftover.

你不得不将任何食物吃剩的部分吐出来。

"They are like little factories that spit out biofuel molecules without the need for starch or cellulose, " explains Gibbons.

吉本斯解释：“这就像一个不需要淀粉或者纤维素就能生产出生物燃料分子的小型工厂。”

Machine spit out a new number?

机器又跳出一个号码吗？

Any food leftover, you would have to spit out.

你不得不将任何食物吃剩的部分吐了出来。

You have to spit out the skins and seeds.

吃葡萄又得吐皮，又得吐籽的。