问题描述：
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.
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.
问题解答：
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