Unless there is a sudden change of political situation, it is not accepted to execute the contract only partially.
除非有什么突然的政局变化,否则执行部分合同不能被接受。
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,