Firstly,on behalf of xxx,please allow me to congratulate to all for you for the opening of this international conference,to welcome all our friends,scholars and experts who came a long distance from abroad,and to thank all the leaders for attending this meeting.
领导 要看是什么,一般外国人不用leader,而用领导的具体职位,或者说政府领导 government officials,或者说公司领导 executive officers of the company...领导是一个很中国的词..