Dorsal cord
[醫] 脊索
?? 詞語組成解析
dorsal
['d?rsl]
adj. 背的; 脊的;背部的;背面的;
cord
[k?:d]
n. （細）繩;燈心絨褲;
vt. 用繩子捆綁;堆積（柴薪）;
??? 情景例句
This has been a hard course for me.
這門課對于我來說很難。
Use a book as a bee does flowers.
讀書如蜜蜂采花，吸取其中之精華。
Best wishes,
衷心地祝福您，