Vacuum cavity
[医] 真空腔
🧩 词语组成解析
🗣️ 情景例句
and the pain is so bad.
疼得很厉害。
Where the knot is loose the string slips.
结子一松掉，绳子就滑脱。
While John Gilbert was in hospital, he asked his doctor to tell him whether his operation had been successful,
当约翰。吉尔伯特住院的时候，他问医生他的手术是否成功，