Metahexamine
甲磺环己尿
🗣️ 情景例句
He is tough in doing everything.
他不管做什么事都很有毅力。
What would you like to eat?
你想吃什么呢？
The aircraft was able to fly over the endless white plains without difficulty.
飞机可以毫无困难地飞过这片茫茫无际的白色原野！