Have you been waiting long?

　　你等了很長(cháng)時(shí)間嗎？

　　He shrieked a long, wordless cry.

　　他發(fā)出一串長(cháng)長(cháng)的尖叫。

　　The long journey tired him.

　　漫長(cháng)的旅程使他疲倦。

　　How long is the River Nile?

　　尼羅河有多長(cháng)？

　　Workers toiled long hours.

　　工人們長(cháng)時(shí)間辛苦工作。

　　Doctors often work very long hours.

　　醫生經(jīng)常長(cháng)時(shí)間工作。

　　I've had a long hard day.

　　我這一天是又長(cháng)又累。