1、adv.不错;是的。n.同“yuppie”，表肯定的回答，属于美语俚语，口语中用。

2、双语例句

Yup this one is the best tool to improve the quality of the movie. 是的，这是提高影片质量的最好的工具。

Yup, there are so many people who just bought a ready business. 是啊，有那么多的人只买一个现成的业务。