挖有沟槽的;
例句:
No one could dislodge them from their well-en-trenched positions.
没人能把他们从防守严密的地方逐出.
He trenched his military camp.
他在军营四周挖壕沟.
The soldiers trenched a long line of defense.
战士们挖好了一条防卫战壕.