at nighttime
表示在夜间这个时间点，泛指夜间。
I prefer to study at nighttime.
我更喜欢在夜间学习。
日落至日出之间的黑暗时段；夜间。
the time between sunset and sunrise when it is dark; the night
日落至日出之间的黑暗时段；夜间。
The hours of darkness between sunset and sunrise; the night.
夜间
the time after sunset and before sunrise while it is dark outside
I prefer to study during the nighttime because it's quieter.
我更喜欢在夜间学习，因为更安静。
用法提示：'nighttime' 作名词，在句中作介词 'during' 的宾语，表示 '夜间'。
The nighttime sky is filled with stars.
夜间的天空布满星星。
用法提示：'nighttime' 作名词，在句中作定语修饰 'sky'，表示 '夜间的'。
We should avoid driving at nighttime due to poor visibility.
由于能见度低，我们应该避免在夜间驾驶。
用法提示：'nighttime' 作名词，在句中作介词 'at' 的宾语，表示 '夜间'。
表示在夜间这个时间点，泛指夜间。
I prefer to study at nighttime.
我更喜欢在夜间学习。
强调整个夜间时段。
The city is very quiet during the nighttime.
夜间城市非常安静。
nighttime 用作定语修饰名词。
Nighttime activities include stargazing.
夜间活动包括观星。
grammar · medium
易错句子I usually study at nighttime.
正确表达I usually study at night.
在英语中，固定短语是'at night'表示'在夜间'，而'nighttime'作为名词不用于这个介词短语中。中文学习者常受'在夜间'的影响，误用'at nighttime'。
grammar · medium
易错句子The stars are visible in the nighttime.
正确表达The stars are visible at night.
介词'in'通常与'the night'搭配，但'nighttime'前常用'during'或'at'。更自然的表达是'at night'。
night 是一个更宽泛的概念，可以指从日落到日出的整个时间段，也可指特定的夜晚事件或活动；而 nighttime 仅指夜间这段时间。
evening 指黄昏到就寝前的一段时间，通常比 nighttime 开始得早，且多与社交活动相关。
midnight 指夜晚12点整或那个时间点附近，而 nighttime 涵盖整个夜间。
在夜间；晚上
The park is closed at nighttime.
公园夜间关闭。
夜间时段
During the nighttime hours, the city is quiet.
在夜间时段，城市很安静。
夜空
The moon shone brightly in the nighttime sky.
月亮在夜空中明亮地照耀。
睡前习惯；夜间例行活动
A warm bath is part of her nighttime routine.
洗个热水澡是她睡前习惯的一部分。
夜间温度
The nighttime temperature fell to five degrees.
夜间温度降到了五度。
夜间宵禁
The government declared a nighttime curfew.
政府宣布了夜间宵禁。
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