essential

13 篇文章
They receive year round sunlight but they lack the nutrients essential for the growth of plankton.
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They receive year round sunlight but they lack the nutrients essential for the growth of plankton. 虽然充满阳光 但是这里主要缺少浮游生物生长所需的养分

plankton growth receive essential lack nutrients round sunlight year they for of the but
All these large forest animals have come here to collect an essential element of their diet that lies buried beneath the mud.
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All these large forest animals have come here to collect an essential element of their diet that lies buried beneath the mud. 所有的这些森林动物来到这里 收集埋在泥下的对身体有益的微量元素

element buried essential mud diet large lies come collect animals forest an here these their beneath of all that have the to
that an early warning system is essential.
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that an early warning system is essential. 所以即时预警设备是最重要的

essential system early an warning is that