请帮忙翻译下列两条新闻,并分别说明kick off的意思,最好能说明使用方法,我发觉这个词很常用,但意思感觉又比较混乱。
1、Indonesia kicks off Indian Ocean-wide tsunami practice drill,a U.N. backed initiative to test warning systems and overall preparedness of nations。
2、Australian pop star kylie Minogue kicks off her first-ever American tour hoping to finally crack the lucrative U.S market.