The talks began some fifteen minutes late.

　　商談遲了約十五分鐘才開(kāi)始。

　　We paid off our mortgage after fifteen years.

　　我們歷經(jīng)十五年的時(shí)間還清了抵押借款。

　　Bob spent fifteen months alone on his yacht. Ann, meanwhile, took care of the children on her own.

　　鮑勃獨自在他的游艇上待了十五個(gè)月。在這段時(shí)間，安一個(gè)人照顧孩子。

　　In its heyday , the company ran trains every fifteen minutes.

　　公司在最興隆時(shí)期每隔十五分鐘就開(kāi)出一列火車(chē)。