at liberty〔介词〕任意的,自由详细»
at liberty〔形容词〕自由,随意,有空详细»
任意ad libtium;at discretion;at her own sweet will;at his own sweet will;at my own sweet will;at one's option;at our own sweet will;at pleasure;at their own sweet will;at will;at your own sweet will详细»