Drivers must be on the alert for traffic signals.
驾驶员必须密切注意
号。
号；讯号，指挥
Drivers must be on the alert for traffic signals.
驾驶员必须密切注意号。
The traffic signal lamp provided by the invention ensures that people with achromatopsia can also identify the traffic signals.
本发明提供的号，使得了色盲症的人也能辨
号。
The traffic signal lamp of the important composition part controlled as the traffic should internationalize too.
作为控制的重要组成部份的号也应国际化。
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