Neohexene
新已烯, 二甲基丁烯
🗣️ 情景例句
One scoop or two?
一杓还是两杓？
The doctor advised me to take better care of myself.
医生劝我要多照顾自己。
But every night he heard the noise upstairs.
但每天晚上他都听到楼上的声音。