有一种假说认为，这是一种自然现象；在特别适合产卵的那几年后，刺冠海星自然会经历种群数量的波动。
One hypothesis is that it's a natural phenomenon, that the starfish naturally undergo population fluctuations following particularly good spawning years.
采用一个适合于风险数量的项目关系并信任其是处在一个互相合作的部分中。
Adopt a relationship with the project that is suitable for the amount of risk and trust there is in the relationship between collaborating parties.
所有这些控件都适合显示数量有限的选择，但它们不能扩展到数百或数千个可能值。
Any of those controls is good for displaying a limited number of choices, but they don't scale well to hundreds or thousands of possible values.
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