Selenicon
硒层视象管
🗣️ 情景例句
Good morning, Mr. Smith. I brought the contract you are been looking for.
上午好，斯密司先生。我带来了你要等待的合同。
What time should I be at the departure gate?
我在什么时间到登机门？
Yes, sir?
什么事，先生。