laughing gas造句

1、Objective To research the abirritation of laughing gas in induced abortion.
目的：研究笑气在人工流产术(以下简称人工流产)中的镇痛作用。

2、Objective To research the analgesia of laughing gas in induced abortion.
目的研究笑气在人工流产术中的镇痛作用。

3、Every time I relayed this story, there will always be some people laughing gas fork.
每次我转述这个故事，总有一些人笑得岔了气。

laughing gas翻译