世界和平的英文表达是"world peace"。它的来源可能源自对希望人类能够和平相处的愿望，以及对一个没有战争和冲突的世界的憧憬。以下是一些例句：

"World peace is not just a dream, but a goal that we can work towards."

"Working towards world peace is the responsibility of every individual, government, and organization."

"We must all do our part to promote world peace and to prevent conflicts from escalating into wars."

"Peace is not just the absence of war, but the presence of justice, equality, and respect for human rights."

"Let us strive for world peace, so that all people can live in safety and with dignity."