separation

n.1.分开,分类;2.分隔

sentiment, sentimental, sentimentalist, sentimentality, sentimentalize, sentimentalise, sentimentally, sentinel, sentry, sentry-box, Seoul, sepal, separability, separable, separably, separate, separate from, separate...from, separated, separately, separateness, separatism, separatist, separator, sepia, sepsis, Sept, sept(i)-, September, septet, septic, septic tank, septicaemia (US septicemia), septuagenarian, sepulchral, sepulchre (US sepulcher), sequel, sequela, sequence, sequence of tenses, sequential,