Pentaether
五醚, 四甘醇二丁醚
🗣️ 情景例句
Thank you.
谢谢各位。
Hello! I'm from ABC Insurance. May I speak to you?
您好，我是从ABC保险公司来的。我可以跟您谈谈吗？
Yes.He must remain in bed for another two days.
是的，他还必须卧床两天。