渡边博士和他的同事第一次研究热量限制的机制是否对轮虫同样有效。

Dr Watabe and his colleagues first looked at whether caloric restriction does, indeed, work its magic on rotifers.

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数量限制将会提高你至少买一件的几率，如果你本来就打算买一件的话，这种招数还会更加有效。

Setting a limit increases the likelihood you'll buy at least one, and it's even more effective if you were already planning to buy one of the item.

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但在授予对象、标的资产、期权的授出数量限制、确定行权价格的依据、行权期及有效期等方面有所不同。

But there are some different ways on the vesting object, upper limits of the amount of Options, the measurement of the exercise price and the effective date.

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