a sucking stomach的意思|示意

Application: it is a systemic insecticide, with both contact and stomach action against sucking mouthparts pests such as plant hoppers, aphids, leafhoppers, thrips whitefly, ect.

用途：主要用于防治水稻、小麦、棉花等作物上的刺吸式口器害虫，如蚜虫、叶蝉、蓟马、白粉虱及马铃薯甲虫和麦秆蝇等。

A lady noticed her husband standing on the bathroom scale, sucking in his stomach. Thinking he was trying to weigh less with this maneuver, she commented, "I don't think that's going to help."

一个女人看到丈夫使劲收腹站在体重秤上，以为他想称得轻一点，就说：“没用的。”