commencement
特殊用法annual commencement1.■学年结业典礼commencement of business1.■开始营业commencement of cover1.■保险责任开始commencement of fuel injection1.■喷油提前角commencement of fuel supply1.■供[喷]油始点commencement of injection1.■供[喷]油始点commencement of the limitation period1.■时效期间的开始