ulna
n
(pl -nae ) (anatomy 解) inner and thinner of the two bones of the forearm inman; corresponding bone in an animal's foreleg or bird'swing 尺骨. =>illus at skeleton 见skeleton插图. Cf 参看 radius.
🗣️ 情景例句
Welcome aboard!
欢迎加入我们的行列!
I took off my hat.
我摘下了我的帽子。
From 1830 onwards in the USA and from about 1870 in Canada, settlers began to move westwards and to take possession of the plains as their own.