I mean a blanket term, a guiding concept, a transcendental signified, something that explains the nature of the structure and something also, as Derrida says, which allows for limited free play within the structure; but at the same time the structure has this kind of boundary nature.

是一个概括性称呼，一个引领概念，一个超验所指，它解释了这个结构的内涵，正如德里达所说，它允许在结构内有限的自由游戏;,但同时这个结构也有限性。

耶鲁公开课 - 文学理论导论课程节选

But he could also note that the commission's proposed solution would require time-consuming boundary changes and could not anyway be implemented until after the next election, thereby signalling that the promised referendum could safely wait until just before or just after that election.

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Four, it follows an established set of parameters and rules, and requires some artificial boundary of time and space.

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Once upon a time the Lib Dems supported boundary changes.

BBC: Seats dispute goes beyond a boundary