Are these products marketable?
这种产品销得出去吗？
I always carry a portable computer with me.
我总是随身携带一台手提电脑。
He conceived of the first truly portable computer in 1968.
1968年，他构想出第一台真正的便携式计算机。
There was a little portable television switched on behind the bar
柜台后面有一台开着的便携式小型电视机。
The latest discs, used for small portable computers, spin 3600 times a minute
用在小型便携式计算机上的最新光盘转速为每分钟3,600转。