答案解析

查看更多优质解析解答一举报5 = penta6 = hexa7 = hepta8 = octa9 = nona10 = deca11 = hendeca12 = dodeca13 = trideca14 = tetradeca15 = pentadeca16 = hexadeca17 = heptadeca18 = octadeca19 = enneadeca20 = icosa 一般后边加名词,

如 double shifts.

或当名词前缀,

如 hexagon 六边形.

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