Docosanoic acid
[化] 二十二烷酸; 山┵酸\\n[医] 榆树酸, 廿二碳酸
🧩 词语组成解析
🗣️ 情景例句
When you feel your life is threatened, just dial 999 to get help.
当你的生命受到威胁的时候，拨打 999 求救。
The class made noticeable improvement.
这班有明显的进步。
He had had a long and uncomfortable trip, for he had been confined to the wooden box for over eighteen hours.
他经历了一次漫长而又难受的旅程，因为他在那木箱里闷了18个多小时。