前: front一: one单: singular number fate; destin ...第一单轮: first round单轮: monowheel; single circle; single round; single whorl前一: before单轮车: peda peda; single block; unicycle单轮的: monocyclic单轮犁: one-wheel plow前一…;上一…: last前一步: back, previous前一个: previous前一列: previous column前一日: proxima luce (prox. luc)前一天: proxima luce前一晚: the preceding night前一行: lag; previous row前一页: previous前一夜: the night before前一种: former 2前一字: prev word单一单态: singlet第一单面: first-order pedion第一单元: ne general rules of writing chinese and english official documents; the first unit= unit one; unit one command; unit one complaint; unit one form of bid; unit one letters of invitation; unit one pacts; unit one summary第一单元 公约: unit one pacts