黑夜的用法和样例：
例句
-
热带地区黑夜来得很快。
Night descends quickly in the tropics. -
他不分白天黑夜，想打电话就打。
He's inclined to telephone at all hours of the day or night. -
黑夜转瞬而至。
Night was fast approaching. -
警卫在黑夜里也应该警醒。
The guard should be watchful during the night. -
黑夜静悄悄的。
The night was pacific. -
指望我白天黑夜都工作是不合情理的。
It's unreasonable to expect me to work all day and all night.
