这里三角形是因为,我们有3个原子核中心原子成键，如果你画它，它就是金字塔形的。

So it's trigonal because we have these three atoms that are bound to the central atom here, and if you picture it, it's actually shaped like a pyramid.

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这类蛋白包含三个区域：一个C末端的配体识别域，一个N末端效应器结合域和一个位于中心的核结合寡聚化域。

This class of proteins contains three domains, a C-terminal ligand recognition domain, an N-terminal effector-binding domain, and a centrally located nuclear-binding oligomerization domain.

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