Whitneyite
淡砷铜矿
🗣️ 情景例句
I said I'd give her an answer in a few days ...
我说这几天给她回答……
Do not wash dirty linen in public.
家丑不可外扬。
Modern machines can make the copy bigger or smaller, lighter or darker and copy onto both sides of the paper.
代机器可以放大、缩小、制作较亮的或较暗的复印件，也可以在纸的两面复印。