1989年11月,中国首次派人参加联合国纳米比亚过渡时期协助团,帮助纳米比亚实现从南非独立的进程。这是中国第( )次派人参加联合国维和行动。In November 1989,Chinafor the first time sent personnel to the United Nations TransitionalAssistance Mission inNamibia to help Namibia realizeits independence from South Africa. This is the () time that China has sent people to participate in UN peacekeeping operations.