At the Lincoln Memorial, the reflecting pool serves as a security barrier.

在林肯纪念堂，反射池起到了安全屏障的作用。

This year, he plans to give a speech at the Lincoln Memorial. The event is free and open to the public, and the area can hold a large crowd.

今年，他计划在林肯纪念堂发表讲话。庆典活动也免费向公众开放，该地区可容纳大批民众。