1 Down syndrome, usually is caused by an extra copy of chromosome 21 (trisomy 21). Characteristics include decreased muscle tone, asymmetrical skull, slanting eyes and mild to moderate mental retardation.  Edward's syndrome, which is the second most common trisomy after Down syndrome. It is a trisomy of chromosome 18.
Guanxi describes the basic dynamic in personalized networks of influence, and is a central idea in Chinese society.
ç¾¤ is composed of 13 strokes and therefore is of average complexity compared to the other simplified Chinese characters (average: 13.1 strokes). masses | crowd. ç¾¤ ( qun / qÃºn ) belongs to the 1000 most common Chinese characters (rank 512) Chinese example words containing the character ç¾¤ ( qun / qÃºn ) å·´å©é¿éç¾¤å² ( BÄlÃ¬ÄlÃ­ QÃºndÄo = Balearic Islands ), ç¾æè¾¾ç¾¤å² ( BÄimÃ¹dÃ¡ QÃºndÄo = (The Islands of) Bermuda ), å é£å©ç¾¤å² ( JiÄnÃ lÃ¬ QÃºndÄo = Canary Islands ), é©¬ç»å°ç¾¤å² ( MÄshÃ oÄr QÃºndÄo = Marshall-Islands ), ç¾¤ä¼ ( qÃºnzhÃ²ng = people ), äººç¾¤ ( rÃ©nqÃºn = crowd ),