But hiking can be a simple (and cheap) way to get out and have a great day. Here's what we would call the bare minimum for a safe day hike of 5 miles or less on a sunny summer day.

但远足可以成为一种简单(且便宜)的外出找乐子的方式。

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A sunny day in winter is colder than a sunny day in summer. This is because the summer day is longer, everything has a longer time to warm up and the sun shines more directly on the earth.

一个冬天的晴日要比一个夏天的睛日冷，因为夏天的白天比较长，一切东西受热的时间较长，太阳直射到地球上。

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They think that day is the summer formal end of the day, is the beginning of a harsh winter day.

他们认为该日是夏天正式结束的日子，也就是严酷的冬季开始的一天。

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Only the sound of insects filled the air as I walked through the empty town that summer day so long ago.

VOA: special.2009.07.04

Just look at those lines again: rom Morn to Noon he fell, from Noon to dewy Eve, A Summer's day.

再看看这几行诗：,从早晨到中午，从中午到黄昏，在整整一个长夏的日子。

耶鲁公开课 - 弥尔顿课程节选

Imagine standing in the middle of the Utah desert on a warm summer day.

设想某个温暖的夏日,你身处犹他州的沙漠深处。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

They both want to suspend, they say, suspend the 18 cent per gallon federal gas tax this summer between Memorial Day and Labor Day.

NPR: 2 of 3 Presidential Hopefuls Back Gas Tax Holiday

Every day for two months this past summer, Conway dropped Ashley off at a day care center just three blocks from his midtown Manhattan office.

FORBES: Those baby-sitter blues

Sure, we have a couple of months of fair weather yet, and several more weeks of summer, but Labor Day is the last major summer holiday when friends and family gather around the hibachi, kettle grill, or gas grill, or whatever it is you cook on.

FORBES: Best Grilled Steaks Ever: Ultimate Recipe For Labor Day Weekend - Or Anytime