railway signalman 中文意思是什麼
railway signalman
解釋
鐵路信號員-
The boy wanted to be a signalman on the railway, but could not be a accepted for the post as he was colour blind and could not tell read from green
這個男孩想在鐵路當名信號員,但是沒有錄取因為他患有色盲,分不清紅色和綠色。
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