这班火车很快，所以我们可用不到一小时通过这段距离。
The train is fast enough that we can cover the distance in less than one hour.
选择要创建的主日志的总数和大小时，需要在可用磁盘空间和应用程序的功能之间进行折中，以便适应日志的所有情况。
Choosing the total number and size of primary logs to be created is a tradeoff between disk space available and the ability of the application to endure the log's full situation.
如果新肺可用，Heather必须在一个小时之内到达医院并开始移植。
If new lungs become available, Heather has to be at the hospital within an hour for the transplant to begin.
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