Backward curvature
[医] [脊柱]后弯, 脊柱前凸
🧩 词语组成解析
n. 弯曲, 曲率\\n[医] 弯, 曲
🗣️ 情景例句
And now for ... something old,
现在， 接着是 一些旧的，
Never too late to mend.
过则勿惮改。
Good idea! It's much better than having classes! Can I go, too?
好主意！这比上课好得多！我也可以去吗？