Detecter
检波器
🗣️ 情景例句
He is on another line right now.
他正在接另一个电话。
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。
Would you like to try it?
您要试一试吗？