Polyarsenite
红砷锰矿
🗣️ 情景例句
What am I supposed to do?
我该做什么？，
There's TV coverage of the NBA tournament.
有个NBA联赛的电视报道。
After it had passed, they swam on as quickly as they could because they knew that the boat would soon return.
快艇过去之后，他们以最快的速度向前游去，因为他们知道快艇马上就要转回来。