Powellite
钼钨钙矿
🗣️ 情景例句
There's much more to be done.
要做的事太多了。
This is a very bad performance.
这是一次非常糟糕的演出。
Imagine a star up t twenty times larger, brighter, brighter and hotter than our own sun.
设想一下，一颗恒星比我们的太阳还要大，还要亮，还要热20倍，