fickle
例子
The candle 's flame proved fickle in the drafty room, dancing erratically and threatening to go out.
在通风的房间里，蜡烛的火焰被证明是反复无常的，不规则地舞动着，随时可能熄灭。
02
善变的, 反复无常的
(of a person) likely to change their mind or feelings in a senseless manner too frequently
例子
The fickle customer could n't decide on a color, switching between options several times before finally making a purchase.
善变的顾客无法决定颜色，在最终购买前多次在选项之间切换。
