Rigid spine
[医] 脊柱强直
🧩 词语组成解析
spine
[spain]
n. 脊柱;脊椎;（动植物的）刺;书脊;
🗣️ 情景例句
What's happening with you these days?
你近来好吗？
But we cannot afford to depend on tradition alone.
但是我们不能靠吃老本过日。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。