his last ocean journey was more than half a century earlier than Columbus' first journey to America这句话为什么要有“more than”“his last ocean journey was half a century earlier than Columbus' first journey to America”这样对吗？

his last ocean journey was more than half a century earlier than Columbus' first journey to America这句话为什么要有“more than”“his last ocean journey was half a century earlier than Columbus' first journey to America”这样对吗？ ocean ocean Ocean Ocean We went to the ocean last summer.对the ocean提问（）（）you（）last summer? on his last legs Ocean Ocean ／ His last name is Hand. his last name is green. Last month ,a celebrating his his last name 翻译中文 what's his last name? 英语提问2划线提问1.Jane went to Ocean Park [last weekend].划线提问2.The cows like to eat [grass].划线提问3.[The clock] is the prttiest thing on the stall.划线提问4.Edidie wanted to [ride his bicycle].划线提问 Jim visited his grandparents last weekend.)划线部分Last weekend He hurt his leg last Sunday对last Sunday提问 his last name is smith.改错 His grandpa died last year.(be dead)