Secondary collecting duct
[醫(yī)] 次級集合管
?? 詞語組成解析
secondary
['s?k?nd?ri]
adj. 第二的，中等的;助手，副手;中等教育的;間接的;
n. 副手，代理人;[天]雙星中較小較暗的一個，衛(wèi)星;[語]次重音;
second第二+ary...的→第二的
v. 收集( collect的現(xiàn)在分詞 ); 收到; 收藏; 聚積
duct
[d?kt]
n. 管，導(dǎo)管;（電線，電纜等的）管道;
vt. 用導(dǎo)管輸送;用管道供應(yīng);
??? 情景例句
This is as useful as screen door on a submarine.
這毫無用處。
I couldn't help it.
我沒辦法。
He described it as 'a very agreeable situation located within two small hills in the midst of which flowed a great river.
“地理位置十分適宜，位于兩座小山的中間，一條大河從中間流過”。