Backs
n. 后背, 脊背；后卫（back的复数形式）
🗣️ 情景例句
Nope.
不对。
He is now out of touch with his old friends.
他现在已经没有和他过去的朋友联系了。
who is which depending on whether the customer's account is in credit or is overdrawn.
究竟谁是债务人谁是债权人，要看储户的账户是有结余还是透支。