choke up

动词 choke up:

1. obstruct
   同义词：stuff, lug, block

1. The chimney is almost choked up with soot.
   烟囱几乎被烟垢堵住了。
2. Facing so large an audience for the first time, the young actress choked up and forgot her lines.
   第一次面对这样多的观众，这位年青的女演员因为怯场而把台词忘了。