In the summer, when we returned to Canada, we revisited this lake at dawn.

夏天，我们回到加拿大后，在黎明时分重游了这个湖。

《柯林斯英汉双解大词典》

Most skywatchers think of Scorpius as a summer constellation (in the Northern Hemisphere), but early risers get a preview of the Scorpion climbing the southeastern sky before dawn during winter.

大多数的天文爱好者会认为天蝎座是夏季的星座（对于北半球来说），但是如果你在冬季黎明前早起的话，在东南方天空仍然可以看到它。

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In the summer she'll sleep for hours after dawn has broken. I'm left lying wide awake during those same hours.

在夏天，她天亮后还能睡几个小时，我只好躺卧在床上看着天花板。

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