根据各自的结构不同，聚合物可以是亲水的或憎水的（喜欢或 讨厌水）、硬的或软的、晶体状的或非结晶质的、易起反应的或不易起反应的。

Depending on the structure the polymer may be hydrophilic or hydrophobic (likes or hates water), stiff or flexible, crystalline or amorphous, reactive or unreactive.

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两亲性聚合物自组装成纳米粒子，用作憎水性小分子药物载体是最近几年研究的热点。

In recent years, much attention has been devoted to the nanovehicle self-assembled from amphiphilic copolymer, which is used for drug carrier.

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