structural variation的用法和樣例：
例句
- Strictly speaking, the classical definition of thixotropy pertains only to those fluids that exhibit reversible structural changes.
嚴格說來，對觸變性所下定義只限於那些表現可逆性結構變化的流體。 - But he is against concentrating oversight powers in the Federal Reserve, which he sees as having been woefully slow to perceive the structural changes in markets.
然而，他卻反對將監管權集中派給美聯儲，在他看來，後者在察覺市場結構變化方面的行動極其遲緩。
