a small military force that serves as a first line of defense; if they become engaged in hostilities it will trigger the intervention of stronger military forces
2
a wire stretched close to the ground that activates something (a trap or camera or weapon) when tripped over
双语例句
1
Empathy not only clues you in to what your subject wants to hear, it will help you avoid stepping onto tripwires that will trigger their suspicions.
换位思考不仅告诉你你的目标想听什么，还会帮助你避免踩到会引发他们猜疑的警报拉发绊网。
2
The dogs scampered around him, their tails like trip-wires at his feet.