Definite ducts
[醫] 直乳管
?? 詞語組成解析
n. 通風管道；管道（duct的復數）
??? 情景例句
It's the world's largest island, but it's also the world's smallest continent.
它是世界上最大的島嶼，同時也是世界上最小的洲。
Idleness is the rust of the mind.
懶惰使腦子生銹。
He sends me interesting postcards from the ports where the ship stops.
他還從船停泊的海港給我寄來了明信片。