Jeffersonite
[矿]锰锌辉石
🗣️ 情景例句
Susan, would you like the crab salad?
Susan，要不要蟹肉沙拉？
Generally speaking, it's cheaper but slower to ship goods by sea than by rail.
总的来说，海运比铁路运输更便宜，但速度慢一些。
Doctor, I'm not feeling well, she said. I often feel tired.
“医生，我感到不舒服，”她说，“我经常感到疲倦”。