Fluorenic acid
[化] 芴酸
🧩 词语组成解析
🗣️ 情景例句
This place really sucks. I want to go somewhere else.
这地方真差。我想到别处去。
Better be alone than in bad company.
交损友不如无友。
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器（测震仪）正是采用了这种思路。