Onan
油浸自冷（变压器冷却方式，Oil Natural Air Natural）
🗣️ 情景例句
It's too noisy for some older people like Nat.
它对于像Nat这样的老人来说太吵了。
These clothes are very beautiful, but are too expensive.
这些衣服很漂亮，但是太贵了。
Who won the girls' 400 metres?
女子400米赛跑谁获胜？