backbones
n. 脊骨,脊柱;支柱,骨干;骨气,毅力;<美>书脊;(聚合分子的)主链;(计算机)主干网
复数 backbones
例句
And stiffening the backbones of the sea!
让海的脊骨变硬!
Why do hummingbirds and gorillas both have backbones ?
为什么蜂鸟和大猩猩都有脊骨?
They are vertebrates, that is, animals that have backbones.
它们是脊椎动物,即有脊骨的动物。