Tetramethylammonium
四甲基銨
??? 情景例句
You didn't put film in the camera, silly!
笨蛋，攝影機(jī)里沒有放膠卷。
This nation is noted for its natural resources.
這個國家以天然資源聞名。
'I left the money in my room,' I said, 'and it's not there now.
“我把錢放在房間里，”我說，“可現(xiàn)在沒有了。