一旦你找到它，就不要让它走掉。

If you find it, don't let it go.

youdao

一旦你选择了你的主题，试着从网上或图书馆找到有关它的有用信息。

Once you've chosen your topic, try to find useful information about it online or from the library.

youdao

一旦你找到了想要的，并且它正好大小合适，那就下订单吧。

Once you find something you like and it’s about the right size, it’s time to order.

youdao