Koettigite
(=kottigite)水砷锌石
🗣️ 情景例句
No. She's at work now.
不在，她正在上班。
Please inform us the quantity that can be supplied from stock.
请告知可供现货的数量。
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，