Trench
Pinyin d ì g ō u
(1) [sewer tunnel]: underground Drainage ditch (2) Deep earth ditch in mountain village [1] 。
(3) [covered ditch; underground drain]: underground ditch
In architecture, trench refers to the drainage ditch or the pipes laid by cables and pipes that are made beside the apron after the roof rainwater pipe is connected to the apron.
Near synonym: earth ditch.
(4) A ditch used for irrigation in the countryside.
Trench
Trenches, which run parallel to the coast, may be as much as 200 km wide and 2400 km long. Very deep, the Mariana Trench in the Pacific Ocean is the deepest point in the world, extending 11 km below the surface of the ocean.
Trenches are very deep, step sided drops in the local floor that form when one of Earth's plates slides under another.
