无线测量集中在移动台与基站之间，主要测量信号电平、信号质量、定时提前量等等。
Wireless measurements occur between MS and BTS and the major measurement parameters include signal level, signal quality, time advance and so on.
那架喷气式飞机比预定时间提前两分钟到达了约翰内斯堡。
The jet arrived in Johannesburg two minutes ahead of schedule.
提前决定你在每天的各个特定时间段要做什么。
Decide ahead of time what you're going to do at certain times each day.
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