Backs
n. 后背, 脊背；后卫（back的复数形式）
🗣️ 情景例句
while you're at work.
在你工作的时候。
This windows is junst as small as that one.
这扇窗户刚好和那扇一样小。
Spirits labelled 95 proof contain only about 47 percent alcohol.
强度标为95的酒中含47％的酒精。