at category number的意思|示意

Web requests: This category is the maximum number of Web requests that a Web service can receive and send nearly at the same time.

Web请求：此类别是Web服务在相同时间可以接收和发送Web请求的最大数量。

The number of algorithms in each category is limited and new ones emerge at very slow rate.

每一类算法的个数都有限，而且新算法出现的很慢。

The number of nominees in each category has been fixed at five for as long as most of us can remember (it was 10 in the early years), and good movies have always been overlooked.

每个奖项的提名影片不得超过五部，否则大多数人都记不住(刚开始的几年里曾经以十部为限)，这条规则常常导致很多优秀影片无法入选。