确实，有些地方发现了有两个铱层。

Indeed, two iridium layers have been found in some places.

youdao

事实上，在某些地方发现了两个铱岩层。

Indeed, two iridium layers have been found in some places.

youdao

之后他们计算了铱层上的物种。

Then they counted the species above it.

youdao

铱大概是最好已知有很多原因。

Iridium is probably the best known for a variety of reasons.

youdao

铱卫星通常轨道较低，其运动较快。

Iridium satellites are unusual because their orbit is so low and they move so fast.

youdao

当然因为你比我更喜欢这件铱服。

"Of course, because you" re better than I like this dress.

youdao

在这些材料中，金属铱配合物最为有效。

In all of these, iridium complexes are the most effective.

youdao

重量和长度的国际标准原型用90%的铂，10%的铱制成。

The international primary standard for the kilogram is made of 90% platinum, 10% iridium.

youdao

彗星是由“脏冰”所组成，而不是像小型那样由固体岩石组成，所以只含有少量的铱。

Comets consist of "dirty ice", rather than solid rock, and so contain little iridium.

youdao

中找到了元素铱岩层，而这通常会被发现于小行星中。 这次灭绝事件杀光了恐龙以及许多其他动植物物种。

The mass extinction event killed off the dinosaurs and many other animal and plant species.

youdao

中找到了元素铱岩层，而这通常会被发现于小行星中。 这次灭绝事件杀光了恐龙以及许多其他动植物物种。

The mass extinction event killed off the dinosaurs and many other animal and plant species.

youdao