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A year ago, we told you about an experiment at DukeUniversity in Durham, North Carolina.

一年前，我们介绍过在卡罗莱娜北部的达拉谟的杜克大学进行过的一个实验。

Fresh dust devil tracks have been seen on Mars before, but actually seeing one up close was a surprise.

以前也曾发现过火星尘暴刚刚活动过的痕迹，但能看到上图这样接近的情景的确很令人惊奇。

If you have ever called malloc or new , then you have used dynamic memory allocation.

如果你曾经调用过 malloc 或 new ，那么你就已经使用过动态内存分配。

Earthling many good deeds, you must have heard, you Batafu someone to the ground, you offer one's seat in the car for the elderly. or, you will have heard of 6,370,250 area.

人世间的很多善行，你一定听过了，有人跌在地上你把他扶起来，你在汽车上让座给老人，或者是，你定也听过无名氏的指教。

Oral administration with too high or low dose of the antigen can not prevent EAU as well as the cytokine levels do not change obviously.

口服过高或过低剂量抗原不能预防EAU，细胞因子的表达水平也无明显改变。

In addition, of those who had alcohol dependence during their lifetime, only 24.1 percent were eer treated.

而且，在那些一生中曾有过酒精依赖的人群中，只有24.1%的人曾接受过治疗。

What not to do the injections have been like medicine and sometimes the not so effemination Qinghuo eat things like the effects of penicillin on the pregnant women did not does not matter!

不要有什么事就打针吃药有时过过就好了不要那么娇气吃点清火的东西就好了青霉素对孕妇没影响不要紧！

I haven't been to Paris, but I've seen a picture of the Eiffel Tower.

我没有去过巴黎，不过我看见过一张爱菲尔塔的照片。

I have been to France,I have seen Eiffel Tower.

我曾去过法国，我见过爱菲尔铁塔。

An eightieth birthday is special because not everyone can live so long.

80岁生日毕竟不同寻常，它标志着又活过了，或者说挨过了，一个十年。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。