Borylarsenate
砷酸氧硼
🗣️ 情景例句
I'm not sure I'm up to it.
我不能肯定我是否能做得来。
She is at a loss as what to do.
她不知怎么办才好。
Visitors have been asked to keep the woods clean and tidy.
游客已被告知要保持树林的整洁。