Night/ naɪt /

1.noun [c/u] 
(period of darkness) 黑夜

2.noun [c] 
(evening) 晚上

at night
夜间
from nine o'clock at night until nine in the morning
从晚上9点到早上9点
by night
夜间
They travelled by night to avoid detection.
他们夜间赶路以免被人察觉。
in/during the night
夜里
the night before last
前天晚上
the night before (sth)
前一天晚上
night and day {or} day and night
日日夜夜
night was falling
夜幕降临了
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