Hellandite
钙铒钇石
🗣️ 情景例句
But your L C must reach us 30 days before delivery.
但交货前30天，我们必须要收到你们的信用证。
I will go out with him is he asks me.
我会和他出去，假如他要求我的话。
I cannot express how glad I am to hear from him.
我无法表达我接到他的信时有多高兴。