Are these products marketable?

　　這種產品銷得出去嗎？

　　I always carry a portable computer with me.

　　我總是隨身攜帶一臺手提電腦。

　　He conceived of the first truly portable computer in 1968.

　　1968年，他構想出第一臺真正的便攜式計算機。

　　There was a little portable television switched on behind the bar

　　柜臺后面有一臺開著的便攜式小型電視機。

　　The latest discs, used for small portable computers, spin 3600 times a minute

　　用在小型便攜式計算機上的最新光盤轉速為每分鐘3,600轉。