名词 isomer:

1. a compound that exists in forms having different arrangements of atoms but the same molecular weight

isomern.同分异构体isomerosen.异构糖isomerismn.[化]同分异构现象；同核异构性；[计]同质异能性isomerasen.[生化]异构酶isomerizate异构化isomer ratio异构体比率isomeric CAD异构CADisomer shift同质异能素转移isomeric RNA同质异构RNAisomerphalan抗瘤氨酸, 异溶肉瘤素, 异苯丙氨酸氮芥isomerzation并构化

1. Evidently, living things can somehow distinguish between optical isomers.
   显然，生物体对这两种同分异构体能够有所识别。
2. The process of the separation and i-dentification of the organic compound isomers is relatively complicated.
   有机化合物的同分异构体的分离和结构鉴定是比较复杂的。