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1·Ethylene is the natural plant hormone in fruit that makes them turn ripe, apparently.

很明显，乙烯是水果中天然的植物激素，使水果成熟。

2·Of course, alkaloids can serve as plant hormone as well.

当然，生物碱也可能作为植物的激素。

3·Apples, for example, release ethylene gas, a plant hormone.

例如苹果，释放出乙烯气体，这是一种植物激素。

4·A plant hormone that promotes root formation and bud growth.

一种促进根的形成和芽的生长的植物激素。

5·A synthetic plant hormone promoting elongation of stems and roots.

一种促使茎和根伸长的合成植物激素。

6·A synthetic plant hormone promoting elongation of stems and roots.

一种促使茎和伸长的合成植物激素。

7·Our results establish the first structural model of a plant hormone receptor.

我们的结果是建立了首个植物激素受体结构模型。

8·Plant hormone is a kind of physiological activity substance adjusting plant growth effectively.

植物激素是对植物的生长发育产生显著的调节作用的生理活性物质。

9·The more hard tomato plant hormone use more, had better not buy, or buy back don't eat right now.

越硬的西红柿植物激素使用越多，最好不要买，或者买回来别马上吃。

10·Apples, for example, release ethylene gas, a plant hormone. It can cause other foods to ripen too quickly.

例如，苹果释放乙烯气体——一种植物激素，会引起其它食品过早成熟而腐烂。