英语翻译世界中有七颗名为“龙珠”的物件,只要集齐七颗龙珠就可以呼唤出神龙,向神龙许愿便可以达成任何愿望,而龙龙珠在神龙实

There exist seven magic stones called 'Dragon Balls' in the world.The person who collects them together can summon the Dragon and draw upon his power to realize a dream .However,the Dragon Balls will scatter automatically and become ordinary stones again as soon as they've been used.So everyone desires them.
有的结构意译了一下 直译的话前面就很好

第一句没有主语 there are seven Stone called 'Dragon Ball'in the world
if you Collect all of them ,you can make a wish to the Dragon and the
Dragon will make your dream come true.However, the Dragon...

In the world there are seven stones called "Dragon Ball", If you can collect all of them, you can summon the Paradise and make a wish to drive every dream come true. After the promise, the Paradise will scatter automatically and become stones again. So everyone want to get them.

最后一句我感觉翻成"在你的愿望实现后龙珠就会重新变成石头。所以每个人都想得到它“比较符合剧情

It has seven stones called 'Dragon Ball' in the world.If you collect all of it,the devine dragon will be summoned.And it will satisfy all your desires.But when your dreams come true,the ball will fly off and become stones again.So everyone wants to find it.