🧩 词语组成解析
epithelial
[ˌepɪ'θi:lɪrl]
adj. 上皮的，皮膜的;
duct
[dʌkt]
n. 管，导管;（电线，电缆等的）管道;
vt. 用导管输送;用管道供应;
🗣️ 情景例句
I need to get out more.
我需要多出门去。
Do not sell the bear's skin before you have caught the bear.
熊未到手休卖皮（勿过早乐观）。
They are often more industrious, useful citizens than those who are never late.
他们与那些从不迟到的人相比，常常是更勤奋有用的公民。