n (fml 文)
1 [U] action of oscillating or being oscillated 摆动; 动摇; 振荡
*the oscillation of the compass needle 罗盘指针的摆动
* the oscillation of radio waves 无线电波的振荡.
2 [C] single swing or movement of a thing or person that is oscillating （物或人的）一次摆动, 动摇
*Her oscillations in mood are maddening. 她喜怒无常能把人气疯.
n [U and C]
formal oscillations are frequent changes between two extreme amounts or limits
oscillations in the value of the dollar
oscillating between growth and decline
formal oscillations are frequent changes between one feeling or attitude and another
The drug causes oscillations of mood in some people.
technical a regular movement of something from side to side
the oscillations of a pendulum
technical a regular change in direction of an electrical current