每日雅思词汇：半生缘　　人缘 relations with people; 　　有人缘 enjoy great popularity; 　　血缘 blood relationship; 　　姻缘 marriage; 　　喜结良缘 tie the knot; 　　无缘无故 it is without rhyme or reason; 　　前世因缘 predestination; 　　投缘 congenial