Sera
浆液, 血清\\n[医] 血清; 浆液
🗣️ 情景例句
Why do prices always go up during Spring Festival?
为什么春节期间很多东西都会涨价？
Laws catch flies but let hornets go free.
法网只捉苍蝇，不捉黄蜂。
An even harder situation is to be on the platform in good time for a train and still to see it go off without you.
更难堪的情况是虽然及时赶到站台上，却眼睁睁地看着那趟火车启动，把你抛下。