Polyester: Organic compound, any of a class of polymers formed by ester linkages between monomers.
聚酯：单体之间以酯键连接而形成的一类聚合物，为有机化合物。
Aspirin: Common name of acetylsalicylic acid, an organic compound introduced in 1899. The ester of salicylic acid and acetic acid, it inhibits production of prostaglandins in the body.
阿司匹林：乙醯水杨酸的俗称，1899年发现的一种有机化合物。系水杨酸和醋酸的酯，会抑制前列腺素的生成。
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