Chordal addendum
[機] 弦線齒冠
?? 詞語組成解析
a. 索的, 脊索的\\n[醫] 索的
addendum
[?'dend?m]
n. 附加物;補遺;附錄;<機>（齒輪的）齒頂（高）;
??? 情景例句
Well, there we are.
好了 ，就這樣了。
How much is it all together?
一共多少錢？
One day, he walked into an expensive shop after having been caught in a particularly heavy shower.
一天，他遇上一場瓢潑大雨，淋得透濕。