red-color sign 红色征 ; 赤色征
red color sign 无红色征
red colour sign 红色征
red color sign positive 红色征阳性
red color sign negative 红色征阴性
Red cap is the sign 红帽子是我的指引
Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area.
早在20世纪初，一些停车标志是黄色的，因为在光线不好的地方很难看到红色标志。
Just follow the red sign. You can find it.
只要跟着红色标志走，你就会找到那个地方。
See the red sign across the street? It's over there.
你看到对街的红色标志吗？就在那里。
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