任意买卖

【法】 purchase and sale by will; voluntary purchase and sale

任意的英语翻译：

arbitrariness; at discretion; at will; random; voluntariness
【医】 ad lib.; ad libitum; random

买卖的英语翻译：

merchandise; marketing; bargain; buying and selling; trade; transaction
【经】 bargain; commercial act; commercial transaction; handle