英语理解Alvin has carried some 12,000 people on a total of more
英语理解Alvin has carried some 12,000 people on a total of more than 3,000 dives. Alvin has carried some 12,000 people on a total of more than 3,000 dives.(注:Alvin是个submersible) 1 翻译 2 on在这里怎么理解?