cause的名詞咋寫

　　Tree roots can cause damage to buildings.

　　樹根會給大樓造成損害。

　　High temperatures can cause hallucination.

　　高燒可使人產生幻覺。

　　Idealistic young people died for the cause.

　　理想主義的年輕人為這項事業(yè)而獻身。