Definition: to prevent movement through something Level: B2
一棵倒下的树挡住了路。
A fallen tree is ___blocking the road.
花了三个多小时，因为发生了车祸，街道被封锁了两个小时。
It took over three hours because there was a car accident and the street was ___blocked for two hours.
警察封锁了入口以防止人群进入。
The police ___blocked the entrance to prevent the crowd from entering.
