这是什么用英语怎么说

1、词典释义：whats this。这是什么。

2、双语例句“这是什么？”他妻子再次问道，语气温和但很坚决。What is it? his wife asked again, gently but insistently.“这是什么？” 他向看门人问道。What is this? he asked the janitor.