Pentoxide
n. [化]五氧化物
🗣️ 情景例句
It was a pretty dumb thing to do.
做那件事真傻。
I can't begin to tell you how much I appreciate this honor.
我实在是无法表达我对给予我此荣誉的感激之情。
Please make sure you mark the shipment for careful handling.
请不要忘了在货物上标明“小心搬运”。