intercepting

动词 intercept:

1. seize on its way
   同义词：intercept, stop
2. tap a telephone or telegraph wire to get information
   同义词：wiretap, tap, intercept, bug

1. Effective defence is a matter of intercepting their missiles before they can reach us.
   有效的防卫是不待对方导弹击中我们而先行将其拦截。
2. The police had been intercepting my mails.
   警方一直截查我的邮件。