In Boston, commuters stood reading the news on the electric sign at South Station.
在波士顿，上班的人们站着看南站的电子公告牌上的新闻。
Designing the sign transfer board and the driver board of electric and hydraulic servo mechanism.
设计了信号偏置电路和伺服阀驱动电路。
Designing the sign transfer board and the driver board of electric and hydraulic servo mechanism.
设计了信号偏置电路和伺服阀驱动电路。
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