Backs
n. 后背, 脊背；后卫（back的复数形式）
🗣️ 情景例句
It was very thoughtful of you to send flowers.
你送花来，想得真周到。
He is showing off his brand-new car.
他正在炫耀新出品的汽车。
I'm sorry to have bothered you.
对不起，打扰你了。