Have you been waiting long?

　　你等了很長時間嗎？

　　He shrieked a long, wordless cry.

　　他發出一串長長的尖叫。

　　The long journey tired him.

　　漫長的旅程使他疲倦。

　　How long is the River Nile?

　　尼羅河有多長？

　　Workers toiled long hours.

　　工人們長時間辛苦工作。

　　Doctors often work very long hours.

　　醫生經常長時間工作。

　　I've had a long hard day.

　　我這一天是又長又累。