吸水软膏剂的英文：
absortion ointment

Fly in the ointment
一粒老鼠屎坏了一锅汤

a perfumed oil or ointment for the hair.
一种能使头发产生香气的油状物质。

a mercurial ointment, compound, etc
含汞药膏、 汞化合物

The only fly in the ointment is that there are only two bedrooms.
美中不足的是只有两间卧室。

He spread on the ointment and worked it in thoroughly with the fingers.
他敷上油膏，并用手指揉擦，使它充分浸入。