At a street intersection there is no policeman, no written sign. But the light turns red, and the drivers stop. Then it turns green, and they start moving once more. That light is just as full of meaning as though the words "Stop " and "Go" were spoken or written. Signals recongnized by the eye can take many forms. There are signal fires and smoke signals. There are signal flags, used especially at sea to convey all sorts of complicated messages.
[Translation from English to Japanese ] At a street intersection there is no policeman, no written sign. But the ligh...
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