Natronbiotite
钠黑云母
🗣️ 情景例句
Hello.
你好。
I'd like to make an appointment with Professor Smith. Would 9:00 tomorrow be all right?
我想和史密斯教授约个会面时间。明天9点行吗？
No wonder people say that computers are taking over the world.
难怪有人说电子计算机正渐渐接管世界。