相关skimming的文学知识

skimmingofwastewaterWhatisskimming?Theswallowswereskimmingby.skimmingpebbles(overthelake)Sheisskimmingthemilk.Thespeedboattookoff,skimmingthewaves.Aswallowflewwestskimmingthelake.Theswallowswereskimmi...