他们新活动的启动今天以新闻发布会开始。

The ___launch of their new campaign began today with a press conference.

至于自然资源，自从该活动启动以来，没有任何改变，因此效果不佳。

As for the natural resources, it is not very effective as nothing has changed since the ___launch of the campaign.

该项目的成功启动吸引了广泛关注。

The successful ___launch of the project attracted widespread attention.