写字时光线的方向不对，被手挡住，致使写字的地方光线太暗。你噉坐遮手影?，掉翻转啦。（你这样坐手挡住光线了，掉转过来吧。）

slang for backlight; to do something with one's back to the light; the light shining in the wrong direction, covered by the shadow of one's hands when writing