Pentaether
五醚, 四甘醇二丁醚
🗣️ 情景例句
I'll be in town next week, maybe you could fit me in.
我下个礼拜会在城里，也许你能安排时间见我。
In the multitude of counsellors there is safety.
谋士多，保安全。
What was the conference like?
这个会议怎么样？