这里的launch是什么意思

这里的launch是什么意思
语境是威廉王子赞助了英国失去亲人的儿童慈善组织,这个组织他母亲戴安娜也曾参加过
The British Press Association reported that he told the launch of the charity's Mother's Day campaign:My mother Diana was present at your launch 15 years ago,and I am incredibly proud to be able to continue her support for your fantastic charity,by becoming your royal patron.

launch .campaign 发起.运动（活动）
这里是名词的“发起”,“开展”