Set a reasonable limit on the amount of data that you require the user to download based on your user base's connection metric (for example, dialup, high-speed, and so on).
对您要求用户下载的数据量设定合理的限制，以用户群的连接度量为基础(例如，拨号、高速等等)。
2
To limit the risk to a one-in-four chance [of 2 degree C warming], then total CO2 in the first half of the 21st century has to be kept below [one trillion] metric tons.
要想将风险限制到四分之一（变暖2摄氏度），那么21世纪上半段CO2的总排放量必须保持在一万吨之下。
3
This set limit is identified by the Processing Value Unit (PrU) metric (which can also be thought of as physical processor equivalents).
这个固定限制是由Processing Value Unit (PrU)度量标识的(也可以看作物理处理器同等物)。