英语语法分析

Observers were told to stay several feet away from the tabulators, on one side of the room marked off by green tape.

观察人员被告知要待在房间里用绿色胶带标出的那一边，距离制表机几英尺远的地方。

At first this meant making punch-card tabulators, but IBM moved on to magnetic-tape systems, mainframes, PCs, and most recently services and consulting.

最初，它制造穿孔卡显示器，之后开发磁带系统，大型计算机及个人计算机，如今，又转向服务和咨询业务。