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释义
the world > physical sensation > cleanness and dirtiness > sanitation > provision of sewers > [noun] > sewer > trap > types of (5)
well trap1819

(a) a box sunk in the ground as a trap for catching rabbits (now rare); †(b) a depression in a drain, in which water lies and prevents the escape…

bell-trap1867

a stench-trap resembling a bell in shape.

ball trap1873

a valve or trap (trap, n.1 8) in which a floating ball directly closes an opening, either by its weight, as the water level falls, or by its…

siphon trapa1884

pot trap1884

†(a) a pot set in the ground as a trap for moles (obsolete); (b) a kind of trap used in drainage, (perhaps) a D trap.

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更新时间:2025/1/12 4:27:21