Scientists have long known that vitamin D is a vital nutrient that the skin produces when hit by sunlight. The amount varies, depending on where the person lives, skin pigment, age and other factors.

科学界的共识是,人的皮肤可以通过日晒产生维生素D.而产生的数量并不固定,这取决于人所在地,皮肤的状况,年龄以及其他的因素.

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In 2016, a blizzard hit the Northeast U. S. it dropped record amounts of snow in many areas, including New York City and Washington, D. c.

2016年，一场暴风雪袭击了美国东北部，包括纽约市和华盛顿特区在内的很多地区都创下了降雪量记录。

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Expect it to hit some time before the end of 2011. (All Things d).

预计它将于2011年末的某个时候正式面世。

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And he gave a very good analogy in saying, "It was almost as incredible as if you'd fired a 15 inch shell at a piece of tissue paper, and it came back and hit you."

他还打过一个很好的比方：,“这就像是,你用个15英寸果壳,打到面巾纸上被弹回来打到你，一样不可思议，“

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because she really liked my wife and thought we'd hit it off really well.

因为她真的很喜欢我太太，她觉得我俩会很合得来。

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It would be a terrible-- it would be a problem all over the world because the damage would extend around the world; but, you'd be much better off if you were on the other side of the world, not where it hit.

那将很严重-,那将是世界范围内的严重问题,因为破坏范围可能扩大到世界各地;,但是，如果你在世界的另一边,而不是撞击地点，就会好得多。

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Last year, he hit nine home runs, two more than he'd hit in the previous three combined.

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We'd hit the road and take baby along.

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Then he'd hit the tar out of it.

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