they had a pleasant chat during a cup of coffee与 they had a pleasant chat over a cup of coffee 有什么区别?

问题描述:

they had a pleasant chat during a cup of coffee与 they had a pleasant chat over a cup of coffee 有什么区别?

前一个句子强调的是 他们谈话愉快;后句强调的是2者:他们一边喝咖啡一边愉快地交谈.