close in
(of days) gradually become shorter (指白天)漸漸變短
The days are closing in now that autumn is here. 秋天來到了, 白天漸漸短了. close in (on sb/sth)
(a) come nearer and attack from several directions 從四面八方逼近并攻擊
The enemy is closing in (on us). 敵人從四面八方(向我們)逼近.
(b) surround or envelop sb/sth 圍繞或籠罩某人[某事物]
Darkness was gradually closing in. 暮色漸漸降臨.