straight edge line的意思|示意

From the side, the front line is perpendicular and straight, coinciding with the maxillary edge or slightly projected forward.

从侧面看，前行是垂直而直，与上颌骨边缘或稍向前预测相吻合。

One, two, three ... three times at the other ... so eight specific actions by him, knocking it with another stone, to take off a flake, and to leave this almost straight line, which is a sharp edge.

所以他不多不少恰恰打了八次，利用其他石头来打磨它，敲掉一小薄片，留下这边面几乎呈现直线，边缘相当之锋利。

To make clean straight folds in cardboard, first make a crease along the line with a blunt edge such as a spoon handle, then fold against a firm straight edge.

为了使清洁直纸板折叠，先如勺子处理沿钝边行折痕，然后对折直边坚定。