a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved
a workman who wets the work in a manufacturing process
someone suffering from enuresis; someone who urinates while asleep in bed
造句
\\\"What is it like down there?\\\" shouted Marvin from the upper cave. \\\"Like the Black Hole of Calcutta, but a lot wetter, \\\" came the reply. \\\"下面怎么樣？\\\"馬文在洞穴上方喊道。\\\"像加爾各答城的小地牢，又悶又熱，不過要潮濕得多。\\\"下面回答道。