Petrox
石油氧化物
🗣️ 情景例句
He's so little ... so new.
他这么小……这么幼……
My friend reads and writes several languages.
我的朋友能读并写好多种语言。
that people have for years assumed that the process of losing vigour with time,
多年来就已认识到。生命力随着时间流失而丧失活力，