fin [fɪn] noun countable ■a thin vertical part sticking out of the body of especially a fish or an aircraft which helps balance and movement 鳍;(飞机的)翼(片);鳍状物•We could see the fin of a shark as it slowly circled our boat.一条鲨鱼绕着我们的船缓缓转圈,我们都看到它的鳍。 •a fish's dorsal fin鱼的背鳍 •The aircraft has a long tail fin.这架飞机的尾翼很长。 |