边检人员作为拦截者，会检查所有入境旅客的证件。

Border officers serve as ___interceptors to check documents of all incoming travelers.

防火墙使用拦截器来阻止可疑的网络流量。

The firewall uses ___interceptors to block suspicious network traffic.

这名后卫作为拦截者表现突出，多次截断对方传球。

The defender excelled as an ___interceptor, cutting off several passes from the opponents.