Try to translate the following into Chinese .4.In 1782 they put into effect a plan for unity under a federal system. This meant that each of the states would remain independent in many ways but would join with the others in a government that would be able to do things that individual states could not do by themselves with success.
1782年，他们实施了一项在联邦体制下联合的计划。这意味着每一个州在许多方面仍保持独立，但同时需联合在统一的政府下，这个政府将做单个州无法独立完成的事情。
