不仅任何给定的约束机制存在局限性，而且一种约束技术不一定对所有信息格式都是最佳选择。
Not only will any given constraining mechanism typically include limitations, but a single constraint technology is not the best choice for all information formats.
所以我们决定采用它，因为它的局限性很小，而且有很大的潜在选择余地，也就是说，试着使协作服务器及相应的工作流程更加具体化。
We decided to use it because its limitations are minor and the potential high cost of the alternative, that is, trying to externalize the collaboration server and the corresponding workflow.
由于BBS的复杂性、局限性，而且速度缓慢，早期系统的用户大半是愿意支付一大笔钱购买速度最快的调制解调器的计算机狂热者。
Because of the complexity, limitations and slowness of BBS, the early system was largely populated by computer enthusiasts willing to shell out big bucks for the fastest modems.
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