点击下方单词,选择对的这个单词
及物动词
1. (电器用)花线，皮线A flex is an electric cable containing two or more wires that is connected to an electrical appliance.
1. the act of flexing
e.g. he gave his biceps a flex to impress the ladies
多通过句子记忆单词，而不是单独死记硬背。
