insect trench

例句：

1. 1. The workercarefully dug a small insect trench to collect the insects.
   工人小心地挖了一个小的昆虫隧道来收集昆虫。
2. 2. The scientists discovered an insect trench that led to a hidden cave.
   科学家们发现了一个通往隐藏洞穴的昆虫隧道。
3. 3. The insect trench was filled with a variety of insects and their larvae.
   昆虫隧道里充满了各种昆虫及其幼虫。