点击下方单词,选择对的这个单词
及物动词
名词
1. 线轴;(录音带、胶卷的)卷轴A spool is a round object onto which thread, tape, or film can be wound, especially before it is put into a machine.
1. a winder around which thread or tape or film or other flexible materials can be wound
Synonym: bobbinreel
多通过句子记忆单词，而不是单独死记硬背。
