Definite ducts
[医] 直乳管
🧩 词语组成解析
n. 通风管道；管道（duct的复数）
🗣️ 情景例句
Examinations are at hand.
考试在即。
His heart cannot be pure whose tongue is not clear.
嘴不净者心不纯。
Anyone who has played even in a school football match knows this.
即使是仅仅参加过学校足球赛的人也有种体会。