Metalsorter
金属鉴别仪
🗣️ 情景例句
She plays hard.
她玩起来也拼命。
This offer must be withdrawn if we haven't received your reply within five days.
如果5天之内我方未必到贵方答复，该盘撤消。
We must stress that these payment terms are very important to us.
我们必须强调这些付款条件对我们很重要。