If headaches only occur at night, lack of fresh air and oxygen is often the cause.

如果头痛只发生在晚上，缺少新鲜空气和氧气常常是其原因。

《柯林斯英汉双解大词典》

I was the only person on deck at that time of night.

夜里那段时间只有我一个人在甲板上。

《牛津词典》

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It is night time. And the only sound that can be heard is the long, lonely whistle coming from the train's engine.

VOA: special.2010.06.13

I think for the past three months, I've only had five or six hours of sleep at night.

我觉得在过去三个月里，每晚我就睡5到6个小时。

I need 实战 - SpeakingMax英语口语达人

In his speech Wednesday night, President Obama said the idea is only one part of his plan and should not be used as an excuse.

VOA: special.2009.09.12

It is the only night race on the Formula One calendar.

CNN: FIA probes 'incidents' at F1 race last season

The boy, his two siblings and his mother were brought to Neverland by Jackson aides, where they spent most of February and March 2003, leaving once in the middle of the night, only to return later.

CNN: Jackson Case: Jurors acquit Jackson of all charges

Of the top 10 grossing movies, only Night at the Museum: Battle of the Smithsonian, features a real movie star in Ben Stiller.

FORBES: Hollywood