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1·It is not unusual for the roots of some desert perennials to extend downward more than ten meters.

一些沙漠多年生植物的根向下延伸十米以上，这并不少见。

2·Perennials up to 25 cm high when flowering.

多年生植物，开花时可达25厘米高。

3·That's how I feel about my perennials, too.

这也正是我对我的无根植物的感觉。

4·And what about all those perennials she planted?

还有，她栽种的那些多年生植物该怎么办呢？

5·Plants that keep growing back are called perennials.

能生长很多年的植物叫perennial（多年生植物）。

6·Perennials like the azalea and forsythia bloom year after year.

多年生的植物如杜鹃、连翘一年接一年地开花。

7·Many weeds are deep-rooted perennials with tubers and rootstocks.

许多野草有不断深长的根，带块茎与根茎。

8·Perennials with slender, branched caudices; fruit oblong or elliptic.

多年生植物具纤细，分枝；果长圆形或椭圆形。

9·So a perennial is the opposite of an annual. Perennials come back year after year.

所以perennial就是annual的反义词，perennial是每年都有的。

10·I want real flowers, perennials which not only grow and change and die, but also rise again and astonish me.

我想要真正的花朵，那些不仅生长、变化和枯萎，并且复活并令我惊奇的多年生植物。

(1)perennial plant多年生植物

(1)perennial grasses多年生牧草

(1)perennial ryegrass黑麦草

(1)perennial root宿根