動(dòng)詞 close off:

1. stem the flow of
   同義詞：shut off
2. isolate or separate
   同義詞：shut off
3. block off the passage through
   同義詞：shut off, block off

1. A section of a waterway, such as a canal, closed off with gates, in which vessels in transit are raised or lowered by raising or lowering the water level of that section.
   水閘用門關(guān)住的水道的一部分，如運(yùn)河。其中通過(guò)升高或降低這部分的水位可以抬升或壓低運(yùn)輸中的船只
2. A movable structure used to close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates.
   門一種用于關(guān)閉入口活動(dòng)裝置，典型的由一塊板上有鉸鏈轉(zhuǎn)動(dòng)或?yàn)槔瓌?dòng)式或?yàn)樾D(zhuǎn)式的組合