Long flame coal
[化] 长焰煤; 烛煤
🧩 词语组成解析
long
[lɔŋ]
adj. 长的;长时间的;冗长的，过长的;长音的;
adv. 长久地;始终;遥远地;
n. 长时间，长时期;[语]长音节;（服装的）长尺寸;长裤;
vi. 渴望，极想;
coal
[kol]
n. 煤;煤块;煤堆;木炭;
vi. 上煤;加煤;
vt. 给…加煤;把…烧成炭;
🗣️ 情景例句
whom I think you've met once or twice before.
我想你以前见过他一两次面。
What do you plan to do this Friday?
明天你打算干什么？
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。