用法:
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.

用法:
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.

• for shame(with shame)
• for short(in short)
• for Short(Short for)
• for some purpose(to some purpose)
• for the benefit of(for the good of)
• for the best(with the best)
• for the future(in the future)
• for the purpose of(for the sake of)
• for the world(for the whole world, for all the world)
• for want of(from the want of, from want of)
• for want of(in want of)
• for years(for one's years)
• for(because of)
• for(for all)
• for(from, of)
• for(in favour of)
• for(in)
• for(since)
• forbid doing sth(forbid sb to do sth)
• forceful(forcible)
• forego(forgo)
• forget doing sth(forget to do sth)
• forget him(forget himself)
• forthcoming
• forward(well up)