Bidirrectional operation
[電] 雙向操作
?? 詞語組成解析
operation
[,ɑp?'re??n]
n. 操作，經(jīng)營;手術(shù);[數(shù)]運(yùn)算;作用;
oper 工作 + ation 表示行為、狀態(tài)、過程 → n.操作；手術(shù)；運(yùn)算
??? 情景例句
I did not notice it until yesterday.
我一直到昨天才注意到它。
Yes,I had breakfast two hours ago.
是,我2小時(shí)以前吃了早餐。
Sure. Later this evening.
當(dāng)然可以。今晚晚些時(shí)候。