dock(undock)dock(undock)固定: fixed; regular浮动: float; drift; ripple; swim固定(浮动)固定: dock(undock)固定及浮动物体: fixed and floating objects {= f.f.o从固定汇率到浮动汇率: from fixed to floating exchange rates下载手机词典可随时随地查词查翻译