Potin
铜锌锡合金
🗣️ 情景例句
Why do you want to leave your current employment?
你为什么希望离开目前的工作？
I would have gone on the picnic if it hadn't rained.
如果没下雨，我就去野餐了。
That does not prove that it does not exist;
这并不是证实不存在噪音对健康的影响。