[116-36] rank
v.排序,排行n.等级[116-36] discrete
adj.不连续的;离散的(separate)[116-36] symmetry
n.对称(性),匀称(balance, harmony)[116-36] sequence
n.序列(procession, progression)[116-36] dual
adj.二重的;两层的(double; twofold)[116-36] induction
n.感应,感应现象;归纳[116-36] inference
n.推论[116-36] circular
adj.循环的,圆的(circuitous, roundabout)