It's built with something called a buttressed core: you have a strong centre section with legs that buttress it all the way up.

它的建造依赖这一个支撑核心：你有一个坚强的核心部分来保证整个塔是直的。

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Fortunately, the case for sectors as a way to augment your core equity exposure and manage your economic perspective is buttressed by more advanced measurements of their return patterns.

FORBES: Sector Investing Much Smarter Than Trying To Guess What's Growth And Value