'个计划听起来虽然很难,但他决心将付诸实施'译为英语

This plan sounded difficult, but he was determined to put it into action.

This plan sounds very difficulty, but he make determination to carry it into practice!

He determined to carry out the plan though it sounded extremely difficult.

Though difficult the plan soulds, he still determine to put it into practice!

This plan sounds although very Difficult ，But he was determined will put into practice