to lock down
01
封锁, 关闭
to restrict access to a place or area, usually for security or safety reasons
Transitive
语法信息
形态构成
短语
动作动词
规则
可分离
小品词
down
基本动词
lock
现在时
lock down
第三人称单数
locks down
现在分词
locking down
一般过去时
locked down
过去分词
locked down
例子
The school had to lock down during the threat.
学校在威胁期间不得不封锁。
