She is trying out different cookie recipes. 她正在测试各种曲奇饼干的配方。

　　You're trying out for the cheerleading squad? 你要参加拉拉队员选拔大会？

　　She tried out for the movie. 她参加了电影选秀。

　　I'd like to try out one of your cameras. 我想试试你们的某一台摄像机。

　　Sure, I'll let you borrow whichever one you want. 好的，不论你想要哪一台都可以借你。