pluck something out of the air
US /plʌk ˈsʌmθɪŋ aʊt əv ðɪ ɛr/
UK /plʌk ˈsʌmθɪŋ aʊt əv ðɪ ɛr/
1.
凭空捏造, 信口开河
to say something that is not based on any facts or evidence
:
•
He just plucked that number out of the air; it's not based on any real data.
他只是凭空捏造了这个数字；它没有任何真实数据支持。
•
When asked for a solution, she just plucked an idea out of the air.
当被问及解决方案时，她只是凭空想出了一个主意。