Some ice cores have annual layers just like trees do, you know, how you can count tree rings?

有些冰核有的层，就像树样，你知道，你是怎么数轮的？

We are getting our last round of hardy annuals in.

我们将迎来最后轮耐寒的植物。

Annuals that are good for cutting include cosmos, globe amaranth, larkspur, and Queen Anne's lace.

适合剪下来的植物包括大斯菊、千日红、千鸟草和野胡萝卜花。

But many of the big seeds, notably those of the annual cereals and pulses, are edible by humans.

但许多大子，尤其是谷物和豆类的子，是可供人类食用的。

The descriptions often include whether specific kinds of flowers, from perennials, annuals or tender perennials, work well for cutting and showing.

描述通常包括以下内容：类的花是否适合剪下来并展示，不管是多植物、植物还是纤弱的多植物。

For annual plants growing in an area with a very unpredictable climate, it could be lethal if all the seeds sprouted quickly and simultaneously.

对于长在气候非常不可预测的地区的植物来说，如果所有子同时快速发芽，可能会致命。

The combination of these two factors—a high diversity of species and a high percentage of annuals—means that western Eurasia's Mediterranean zone is the one with by far the highest diversity of annuals.

这两个因素的结合——物的高度多样性和植物的高比例——意味着欧亚大陆西部的地中海地区是迄今为止植物多样性最高的地区。