✅ 同义词
🗣️ 情景例句
before the guests arrive.
在客人到达之前。
Who is the auther of this play?
谁是这戏剧的作者？
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。