close in

• • 使…关闭；封锁：

    The workmen are closing the doorway in.

    工人们即将关闭入口。

  • (白昼)渐短：

    As autumn advances the days close in and the hours of light become fewer and fewer.

    随着秋天的推移，白昼越来越短，光照时间也越来越少。

  • 迫近；包围，笼罩(常与 on 连用)：

    They ran away when the enemy army began to close in.

    敌军迫近时，他们逃跑了。

  • 笼罩得无法进去：

    The airport was closed in by the dense fog.

    机场被浓雾笼罩着，飞机无法起降。