Addendum circle
[機(jī)] 齒冠圓
?? 詞語組成解析
addendum
[?'dend?m]
n. 附加物;補(bǔ)遺;附錄;<機(jī)>（齒輪的）齒頂（高）;
circle
['s?kl]
n. 圓;圓狀物;一圈;圈子;
vt. 圈出，包圍;繞…運(yùn)轉(zhuǎn);
vi. 環(huán)繞，盤旋;
circ圓+le名詞后綴 → 圓，圈，環(huán)狀物
??? 情景例句
Done! You and I, Mrs. Stewart.
辦到了！ Stewart太太和我，
The news caused great excitement.
這消息令人極為興奮。
It can take as long as eight days to rig up rope ladders and to establish supply bases before a descent can be made into a very deep cave.
有時(shí)需要花費(fèi)整整8天時(shí)間來搭起繩梯，建立供應(yīng)基地，然后才能到一個(gè)很深的洞穴里。