skeleton cruris

• 臂骨骼

skeleton cruris的用法和样例：

例句

1. The shell of a snail is its skeleton.
   蜗牛的壳是它的骨骼。
2. Atolls and coral reefs from the stony coral skeleton form.
   环状珊瑚岛和珊瑚礁由石珊瑚的骨骼形成。