finger in the air
US /ˈfɪŋɡər ɪn ðə ɛr/
UK /ˈfɪŋɡə(r) ɪn ðə ɛə(r)/
成語
憑空猜測, 隨意估計
a guess or estimate that is not based on any facts or real information
範例:
•
His prediction about the sales figures was just a finger in the air.
他對銷售數據的預測只是憑空猜測。
•
We don't have enough data, so any estimate would be a finger in the air.
我們沒有足夠的數據，所以任何估計都將是憑空猜測。