We are like jewels, shaped with the hammer and chisel of adversity.

我们有如宝石，需要经过苦难的锤凿来雕琢。

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Cut cured concrete pipe sections with saw or chisel, and cement sections together to form odd shaped fittings.

用锯子或凿子一起切割固化混凝土管段以及水泥部分，形成奇形接头。

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But the dolphin has a bottle-shaped nose and cone-shaped teeth while the porpoise has a flat nose and chisel-shaped teeth.

但是“dolphin”有长圆形的鼻子和锥形的牙齿，而“porpoise”的鼻子却是扁平形，牙齿是凿形的。

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The chisel is a knife designed to be struck with a mallet, while the saw is a knife shaped with a row of mini-blades.

FORBES: Humanity's Unseen Weapons