stop up

动词 stop up:

1. fill or close tightly with or as if with a plug
   同义词：plug, secure

1. Some tried to stop up the leaks while others tried to steady the rudder.
   有些人设法堵漏洞，另一些人设法掌稳船舵。
2. How does that tall tower stop up?
   那座高塔是怎样竖着不倒的？