电话是笨重的拨盘式的那种。
Google实际上控制了一个拨盘，当它卖给你更多的服务，可以有两种选择。
Google in effect controls a dial that, as it sells ever more services to you, could move in two directions.
所设计的楔块式低副单向超越离合器，主要由内环、外环、楔块和拨盘等构件组成。
The V-shaped unidirectional clutch is made of inner ring, outer ring, wedge and driven disk.
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