该联盟已致函苏黎世，要求将情况解释清楚。The union has written to Zurich asking for clarification of the situation.银行致函尼克，称他透支了100英镑。Nick's bank sent him a letter saying he was £100 overdrawn.欲知详细情况, 请致函本公司分店.For further details, please...

“致函”的拼音为：zhì hán...

“致函”的英语可以翻译为：write to ...