Bidirectional current
[电] 双向电流
🧩 词语组成解析
[计] 双向的
🗣️ 情景例句
That sounds very nice. When will it be?
听起来真不错，什么时候呢？
Mother begins baking cookies two weeks before Christmas.
自圣诞节的两周以前，母亲就开始做小甜饼了。
I am sure that, without modern weapons,
我断定，如果没有现代化的武器，