during是什么词
是介词，例如：
1、Use of computers spread rapidly during that period.在那个时期，计算机的应用迅速流传开来。
2、No new evidence emerged during the investigation.调查过程中未发现新证据。
during是什么词
是介词，中文意思是prep.
在期间;在…期间;在…期间的某个时候;
例句
The campaign had begun during his absence.
在他不在期间运动已经开始了。