2. Anemia, bronchitis, dysentery, and trench foot seemed to be an easy way out. 贫血症、支气管炎、痢疾，以及战壕足病似乎都是离开的借口。
3. A long narrow trench or furrow dug in the ground, as for irrigation, drainage, or a boundary line. 沟渠，排水沟，''。'水道'。''在地面上狭长的沟渠或细沟，用于灌溉、排水或用作分界线。
英英解释
n.
1. a ditch dug as a fortification having a parapet of the excavated earth
2. a long steep-sided depression in the ocean floor
3. any long ditch cut in the ground v.
1. impinge or infringe upon
2. fortify by surrounding with trenches
3. cut or carve deeply into
4. set, plant, or bury in a trench
5. cut a trench in, as for drainage
6. dig a trench or trenches
