In 1989 , he traveled to Mozambique , Johannesburg , and Angola , South Africa on a peace-seeking mission .
In 1989 he travelled on a peace-seeking mission to Mozambique , Johannesburg and Angola , South Africa .
In 1989 he travelled on a peace-seeking mission to Mozambique , Johannesburg and Angola , South Africa .
解释一下这句话: In 1989 , he traveled to Mozambique , Johannesburg , and Angola , South Africa on a peace-seeking mission . 输出: