Listen, Richard,doing aerobics for an hour is a lot different than lifting weights.
听着, Richard,一小时的有氧运动可与举重大不相同。
In the 1970s, computers were common enough, but only in big business, government departments, and large organizations.
在70年代,计算机已经相当普及了,但只用在大公司,政府部门和大的组织之中,