详细解释:n. 渠, 沟渠, 战壕
vt. 在...开沟, 挖战壕于, 用战壕围住
vi. 挖战壕, 开沟
词型变化：
动词过去式:trenched过去分词:trenched现在分词:trenching第三人称单数:trenches英语解释：
名词 trench:
a ditch dug as a fortification having a parapet of the excavated eartha long steep-sided depression in the ocean floor同义词：deep, oceanic abyss