Backing vacuum
[化] 前级真空
🧩 词语组成解析
backing
[['bækiŋ]]
n. 后退, 衬背, 后援, 支持者\\n[化] 衬垫
🗣️ 情景例句
and maybe you can help me set the table.
也许你能帮我摆桌子。
He realized that he was heading in the wrong direction.
他意识到走错了方向。
Rastus leads an orderly life.
拉斯特斯生活很有规律，