24. But coping with salt is not the only challenge for plants in a salt marsh. Soil there is dense and very low in oxygen. So spartinas have air tubes.
但是,适应海碱地带过量的盐分并不足以保障他们的生存,因为那儿的泥土非常紧密,而且含氧量极低,所以,大米草还得长出氧气管。
单词 | air tube |
例句 |
原声例句
新TPO听力 24. But coping with salt is not the only challenge for plants in a salt marsh. Soil there is dense and very low in oxygen. So spartinas have air tubes. 但是,适应海碱地带过量的盐分并不足以保障他们的生存,因为那儿的泥土非常紧密,而且含氧量极低,所以,大米草还得长出氧气管。 |
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