蹩腳口語 V.S. 道地口語

蹩腳口語：The waitress judged us from heads to feet in two seconds
道地口語：That waitress sized us up in two seconds.
那個女服務生打量我們兩秒鐘（就知道了）。

size up這個片語意思是 form a judgment or opinion of sb/sth.
也就是"判斷或估計"、"品評"、"迅速對某事做出判斷"。
They sized each other up at their first meeting.他們初次見面時特地打量彼此一番。
商場上盱衡情勢，審時度勢，也可用size up。
Learning to size up business styles "will help you get what you want out of others," Lichtenberg says, whether it's a bonus, a promotion or a deal.