Powellites
(powellite 的复数) 钼钨钙矿
🗣️ 情景例句
Santa Clara? OK. That's about 20 miles away.
圣塔克莱拉？好的，大约是20英里远。
How many cups are you going to order?
你要订几杯？
What do you find hardest in English?
你觉得学习英语哪方面最难？