如果没有某种里程碑式的东西来指示一下从何开始，启动一个项目可能会很难。
It can be difficult to begin a project without some kind of milestone indicating when to start.
活动可以用来作为里程碑，因为它可以指示所有底层的详细活动已经完成。
A summary activity can be used as a milestone since it would indicate that all of the underlying detailed work has been completed.
标准仪表盘包括了车速里程表、短里程表、空挡、远光和转向指示灯。
Standard instrumentation includes a speedometer with odometer and resettable tripmeter as well as indicator lights for neutral, high beam and turn signals.
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