Heptoxide
[建] 七氧化物
🗣️ 情景例句
I just received your letter and I want to let you know my opinion on your plans for the future.
来信已收到，我想告诉你我对你将来打算的看法。
You're carring that joke too far.
你那个玩笑开得太过分了。
We're so proud of you.
我们十分为你骄傲。