what do you usually do when you meet stangers （）the first time?括号_英语解答

what do you usually do when you meet stangers （）the first time?括号为啥填for,不用at?

人气：179 ℃　时间：2020-04-20 13:10:56

解答

for
for the first time 表示：第一次,首次,是固定搭配,不用介词at,记住就行了.