这种植物是耐寒的一年生植物。

The kind of plant is a hardy annual.

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结果表明，耐寒性差、生长期短的一年生植物微孔草m DA含量较低，保护酶活力也较低。

The results showed that MDA content was lower in annual grass, also several antioxidant enzyme activities were lower.

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主要有三个种类的一年生植物：耐寒型，半耐寒型和柔嫩型。

There are three main types of annual flowers, hardy, half-hardy and tender.

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