英语语法分析

Place the insufflator on a flat and dry surface.

注气器要放置地面要平整，环境要干燥。

Never use the insufflator if it is connected to a cylinder placed horizontally or one which has its top pointing downwards.

严禁在其所连接的气缸水平放置时或者顶部倒置时，使用注气器。