意思：这是。
用法：作为一个独立的句子，通常用来指代正在执行任务或者表示的存在。
例句1：this is the police, please put down your weapon and surrender.（这里是，请放下武器并投降。）
例句2：i saw a car accident on the highway and immediately called 911. this is the police, how can i assist you?（我在高速公路上看到一起车祸，立刻拨打了911。这里是，我能为您做些什么？）
例句3：we heard a loud noise coming from our neighbor's house and suspected it was a burglary. we called the police and soon after, this is the police arrived at the scene.（我们听到邻居家传来很大的声音，怀疑是入室盗窃。我们打报，很快就到达了现场。）
例句4：as i walked home late at night, i saw a suspicious person following me. i quickly dialed 911 and said, "this is the police, please send someone to my location."（当我深夜步行回家时，有个可疑人跟着我。我迅速拨打了911，并说道：“这里是，请派人到我的位置。”）
例句5：the bank alarm went off and within minutes, this is the police surrounded the building.（银行的报响了，几分钟后，就将建筑物包围起来。）
同义词及用法：这是、这里是局、这里是部门都可以替换this is the police的用法。