flat chisel

基本解釋

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”有長圓形的鼻子和錐形的牙齒，而“porpoise” 的鼻子卻是扁平形，牙齒是鑿形的。
She lay flat on her back and put the large chisel in her mouth. She nodded at the first volunteer to swing the sledgehammer at the chisel.
她仰麪平躺下來，把大鑿子放進(jìn)嘴裡，朝第一位自願(yuàn)者點(diǎn)了點(diǎn)頭，示意他用大鎚去砸鑿子。