Indeed, it may be for any of the factors, physical as well as biotic, that are essential for organisms.
事实上,竞争对象可能是生命体所必须的任何生物或非生物因素。
In planning for a release, it may be wise to decide upfront that particular requirements will certainly be addressed in the upcoming release (essential themes).
在发布的规划中,事先确定特定的需求将会在即将到来的发布(重要主题)中处理是非常明智的做法。
"Perhaps arsenic is not an essential component for habitability or for life, but it may be one that can be tolerated," she added.
“也许砷并非生命生存的必要元素,但它可能是一种可接受的元素,”她补充道。
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