这种状况在70年代中期到后期开始改变。

This began to change in middle to late 1970s.

youdao

集条染复精梳，纺纱、织造到后期整理于一体。

Collecting dyeing, re-combing, spinning, weaving and finishing.

youdao

在20世纪80年代中期到后期它被作为各种微型计算机上的一个集成环境发售。

It was sold as an integrated environment on a variety of minicomputers in the mid - to late 1970s.

youdao

It imports it into our database and does some fancy indexing as we'll call it later in the term to make searches more efficient.

将它导入到我们的数据库中，并进行一些变址,这将在后期会提到,它可以使查找更高效。

哈佛公开课 - 计算机科学课程节选

Now, just to give you a sense of how cold and calculated this business was, and how in many ways the first defense or justification of slavery in America is of course it certainly is by the late Antebellum Period it is an unabashed economic defense, as we'll see.

以上只是为了让你们体会到,这种交易是如何的冷酷而精明,以及战前后期第一次,美国奴隶制度的保卫与正名之战,不管怎么看,都毫无疑问,是一场赤裸裸的利益保卫战,正如我们所见

耶鲁公开课 - 美国内战与重建课程节选