to pluck something out of the air
01
随口乱说, 不假思索地编个说法
to quickly say something without thinking about it first, usually as a reply to something
习语
非正式
例子
When they asked for a price, he just plucked a number out of thin air.
他们问价格时,他随口乱报了一个数字。
随口乱说, 不假思索地编个说法
他们问价格时,他随口乱报了一个数字。