B: Don't know. Who?
A: One of the secretaries who works in the same company as me!
B: Really? Fancy running into someone you know when you're overseas!
A: Yeah, it's quite a coincidence.
●注釈●
run into someone 誰々に偶然会う
Don't know. = I don't know.
Fancy 〜ing 〜するなんて驚きだ
coincidence 偶然の一致
