布朗尼和菠萝芝士蛋糕都有一个临界值，因为它们的值受到了符号约束的限制。

The brownie and pineapple cheesecake have a marginal value, because their value is at the limit of their sign constraints.

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它们仍然受到资助者、发行供应商和一系列规则的限制——所有这些都约束了 CubeSat 开发人员所能做和不能做的事情。

They're still constrained by funders, launch providers and a series of regulations-all of which rein in what CubeSat developers can and cannot do.

youdao

成本如此之高的另一个原因是行业协会具有约束性的所有权结构等限制性因素。

The other reason why costs are so high is the restrictive guild-like ownership structure of the business.

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Some people want to have these to be many and for them to be very binding, others want them to be very few and not very binding, and that's an argument one can get into.

有些人认为惯例更多一些,更有约束力一些,而有些人却认为惯例的限制少一些,这是争论所在

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