See-saw

see-saw n 1 [C] long plank, balanced on a centre support, and with a person sitting at each end, which can rise and fall alternately 跷跷板 have a go on the see-saw 玩跷跷板. 2 [sing] (a) up-and-down or to-and-fro motion 上下或往复的移动 the slow see-saw of the branch in the wind 树枝在风中缓缓摇动. (b) (fig 比喻) long series of rises and falls 一长串的起伏 Changing demand causes a see-saw in prices. 需求不断变化造成价格反覆涨跌. see-saw, v [I] 1 play on a see-saw 玩跷跷板. 2 (a) move up and down or to and fro 上下或往复移动 a branch see-sawing in the wind 随风摇曳的树枝. (b) (fig 比喻) rise and fall in turn, or move from one position, opinion, etc to another repeatedly 反覆升降; 反覆改变位置、 意见等 Prices see-saw according to demand. 物价随需求变化而反覆涨跌. public opinion see-sawing continuously 不断变来变去的舆论.