I thank our law enforcement officers who protect our streets and secure our homeland.

我要感谢我们的执法人员，他们保护我们的街道，保护我们的家园。

There were 8 law enforcement officers in bulletproof vests.

我们去了8位 身穿防弹背心的警察。

Hours before the speech Trump issued a controversial anti-immigrant video ad which portrays a Mexican citizen who has entered the United States illegally several times, and has killed two law enforcement officers in California.

演讲前几个小时，特朗普发布了一则有争议的反移民视频广告，广告描述了一个墨西哥公民非法进入美国数次，还在加利福尼亚杀害了两名执法人员。