Hexoic acid
[机] 己酸
🧩 词语组成解析
🗣️ 情景例句
Fifth word, seven.
第五个字是"seven。
Did everyone you invited show up?
你邀请的人都来了吗？
As it is, they have been drilling for sixteen hours and they still have a long way to go.
实际情况是，他们已连续钻了16个小时了，但离钻透还早着呢。