Backs
n. 后背, 脊背；后卫（back的复数形式）
🗣️ 情景例句
Keep a small English dictionary with you at all time.
随身携带一本小英文字典。
He's not feeling very well today.
今天他觉得不舒服。
but we were afraid that the strength of the current would prevent its landing anywhere before it became exhausted.
但我们担心，洪水力量将使它上岸之前就筋疲力尽了。