track blockade

例句：

1. 1. The policeare tracking a suspect in the case.
   警方正在追踪这个案件的嫌疑人。
2. 2. The companyis blocking access to its website due tosecurity reasons.
   由于安全原因，公司正在阻止访问其网站。
3. 3. The government has implemented ablockade on the border to preventsmugglers from entering.
   政府已经实施了边境封锁，以防止走私者进入。