Ester
高中 Senior Highn. 酯\\n[化] 酯
🗣️ 情景例句
Oh! Good afternoon. Mr. Wilson, I'm sorry, but he's not in. He's gone out on business.
哦，您好！威尔逊先生。很抱歉，他不在家，他出差了。
I learned English this morning.
我今天早上学英文。
If explosives are used, vibrations will cause the roof of the mine to collapse.
如果用炸药爆破，震动会引起矿顶塌落。