Performic acid
[化] 过甲酸
🧩 词语组成解析
🗣️ 情景例句
Take care on your way back.
回程保重了。
It's $25.00 one way or $45.00 for a weekend excursion.
单程票价25美元，周末旅行来回票价45美元。
But this phase of our development is now finished.
但这个发展阶段已经结束。