陨石

The concentration of iridium in this way can be found in meteorites, the scientists put it linked to the extinction of dinosaurs.

这样浓度的铱在陨石中可以找到，因此，科学家们就把它与恐龙灭绝联系起来了。

The massive sulphide, lead-zinc, iron, copper deposits of the former and the porphyry copper-molybdenum deposits of the latter are the main ore types in the region.3. The conclusions drawn through the research on the Re-Os isotopic geochronology of the Chilu Mo deposit are as follows:(1) the model age of the Chilu Mo ore deposit is 105.6Ma, closely to the 87Sr/86S isochrone age of the porphyric granite, adamellite. So they are closely correlated in the genesis, and both are the production of magmatic evolution of the late Yanshan.

Cu、Mo、Pb、Zn、Au为区内优势矿种。3、对赤路钼矿床的Re—Os同位素年代学研究得出如下结论：(1)赤路钼矿的矿化模式年龄为105.6Ma，与似斑状花岗岩、二长花岗岩等的87Sr/86Sr等时线年龄115±4Ma较接近，表明二者在成因上密切相关，同属燕山晚期岩浆演化的产物；(2)赤路钼矿床具有辉钼矿中Re、Os含量偏低，低87Sr/86Sr初始值和硫同位素组成接近陨石硫等特点，表明其为成矿物质来源于地壳深部，且为斑岩型钼矿床。

That is because meteorites contain a lot more of an isotope called magnesium-26 than would be expected.

因为陨石含有比预期要多的一种叫镁-26的同位素。

According to another theory cited by Knoll,"a large meteorite may have sterilized life on Mars."

根据诺尔提到的另一项理论，「火星生物灭绝的原因可能来自大颗陨石。

Today in the Proceedings of the National Academy of Sciences , the researchers report that they expected to find a 50:50 ratio of right - to left-handed amino acids in the rocks, but instead they found the ratio of amino acids tilted toward left-handedness in all six specimens.

在今天的《美国国家科学院院刊》（ Proceedings of the National Academy of Sciences ），研究人员汇报了，他们希望在陨石里找到含量对半分布的右旋和左旋氨基酸，相反他们发现六个样本里面，两种氨基酸的比都倾向于左旋体。

Of course, the normal merle dog can also have the same white body markings as any other.

当然，正常的陨石和其它色的犬一样带有白色的斑点。

And then you want to destroy the meteor…but to no avail.

并且你想摧毁陨石……………但是现在还没有办法。

There's no need to worry about such a huge meteor will ever land near you.

你不用担心这么大的陨石会降落在你的身边。

It's a Meteorite, Right?

它是块陨石，对吗？

However, this doesn't mean a meteorite is going to fall from the sky on your car.

但是，这不是说会有陨石撞到你的车上。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。