dragnet

1. N-SING A dragnet is a method used by police to catch suspected criminals. A large number of police officers search a specific area, in the hope that they will eventually find the person they are looking for. 拉网式搜查[oft n N]

...a massive police dragnet for two suspected terrorists. ...警方为抓捕两名恐怖嫌疑人而展开的一场大规模拉网式搜查。