Powellite
钼钨钙矿
🗣️ 情景例句
I do.
我就是啊。
We must have your LC at least one month before the time of shipment.
我们必须在船运前一个月收到你们的信用证。
What invariably happens is that a great number of things choose to go wrong at precisely the same moment.
情况经常是这样的，许许多多的事情都偏偏赶在同一时刻出问题，