Wait ( ) ( ) ( ) ( ) when the light is red.
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Wait()()()()whenthelightisred.Wait()()()()whenthelightisred.Wait()()()()whenthelightisred.waittillwh
Wait ( ) ( ) ( ) ( ) when the light is red.
Wait ( ) ( ) ( ) ( ) when the light is red.
Wait ( ) ( ) ( ) ( ) when the light is red.
wait till when the light is red
=等到灯变红为止