单词elephant-s-foot
He got down on one knee and inspected the elephant"s foot and found a large piece of wood deeply embedded in it.
他单膝跪地，考察了大象的脚和发现一块大木头深深植根于它。
The soft skin of an elephant"s foot acts much like a drum head, sensing vibrations.
大象脚底柔软的皮肤很像鼓面，能够感知震动。
Get a purchase on yourself Watson, and place it in the elephant"s foot.
小心点，华生，把你的伞放到象脚里。