n.[C]

1. 溝，溝渠
   They dug trenches to keep the forest fire from spreading.

   他們挖溝以阻止森林大火蔓延。

2. 戰壕
3. 塹壕陣地[P]
   The soldiers fought in trenches for ten days.

   士兵們在塹壕陣地上打了十天仗。

4. 海溝；地溝

vt.

1. 在……挖溝；在……挖戰壕
   They were busy trenching the fields for draining.

   他們忙著在田裡開溝排水。

2. 築壕防衛
   The troops received orders to trench the outpost.

   部隊接到命令在前哨周圍築壕加強防衛。

3. 切；刻

vi.

1. 挖溝；挖戰壕
2. 侵害，侵佔[（+on/upon）]
   The local despot trenched on the temple's property.

   當地惡霸侵佔了寺廟的廟產。

n.

1. a long, narrow ditch.
   ▸a ditch of this type dug by troops to provide shelter from enemy fire.
2. (also ocean trench) a long, narrow, deep depression in the ocean bed, typically running parallel to a plate boundary and marking a subduction zone.

v.

1. dig a trench or trenches in.
2. (trench on/upon) archaic border closely on; encroach upon.