Bpt
双极性晶体管
🗣️ 情景例句
That's very nice of you. Where did you get it? It's not a print.
真细心！你从哪儿弄来的？这还不是复制的呢！
I bought 7 boxes of matches.
我买了七盒火柴。
When could you make a delivery?
你们什么时候可以交货啊？