Kovalevski's canal
[医] 科瓦列夫斯基氏管(神经肠管)
🧩 词语组成解析
🗣️ 情景例句
You don't know up from down.
你黑白不分。
Over 5,000 hours of work went into this software, and today it's my privilege to bring it to you.
这种软件的研制超过5000工作小时，今天我很荣辛地向你们展示它。
A young English writer made the pertinent observation a year or two back
一两年前，一位年轻的英国作家发表了中肯的看法。