Four years ago he hit upon the daring idea of landing on a moving glacier in a helicopter to measure its speed.
四年前，他偶然想到一个大胆的主意，乘直升飞机降落在流动的冰川上，测量其流动的速度。
As I mulled over my missing more than half of each lecture, I suddenly hit upon an idea: Why not leave every other line on my note paper blank?
想着自己有半堂课的笔记记不下来，我突然灵机一动，干嘛不在笔记本上隔行留空呢？
HOLLYWOOD's golden age may have ended in the 1950s, but it is only recently that Tinseltown appears to have hit upon a mathematical way to capitalise on our fickle attention spans.
好莱坞的黄金岁月也许在1950年代就结束了，但是直到最近他们才似乎不经意地使用了一种数学方法来利用我们易变的注意广度，即一个人能集中注意力于某一问题的时间。
I leaned my head on the back of my beach chair and realized she had hit upon a subject that was crucial for me at this time.
我向后仰靠在沙滩椅背上，我意识到她所提及的话题在此刻触痛了我。
Suddenly I hit upon an idea: why not leave every other line on my note paper blank?
突然，我想到了一个好办法：记笔记时我为什么不写一行空一行呢？
He hit upon a good method to speed up the progress of the experiment, but opinions differed among members of the group on it.
他突然想到了一个加速实验进程的好办法，但是组里的成员却对此意见不一。
He hit upon a good method to speed up the progress of the experiment, but opinions differed among members of the group on it.
他突然想到加速进程的好办法，但组里的成员对此却意见不一。
In addition, when you hit upon a good opportunity, you have to act on it.
此外，当你偶然发现一个好的机会时，就必须开始行动。
Once in a newspaper, I hit upon the news that a quick witted policeman spotted a suspects spittle in the street blotted it up and ran a DNA test on it which led to the mans arrest for a murder.
我曾在一份报纸上偶尔看到这样一则新闻：一个智谋过人的警察在大街上看见一个嫌疑犯的一团唾沫后将唾沫收集起来，并对它进行DNA测试，最后推断出凶手并将之逮捕。
Once in a newspaper, I hit upon the news that a quick witted policeman spotted a suspects spittle in the street blotted it up and ran a DNA test on it which led to the mans arrest for a murder.
我曾在一份报纸上偶尔看到这样一则新闻：一个智谋过人的警察在大街上看见一个嫌疑犯的一团唾沫后将唾沫收集起来，并对它进行DNA测试，最后推断出凶手并将之逮捕。
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