Sera
漿液, 血清\\n[醫] 血清; 漿液
??? 情景例句
Why do prices always go up during Spring Festival?
為什么春節期間很多東西都會漲價？
Laws catch flies but let hornets go free.
法網只捉蒼蠅，不捉黃蜂。
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.
更難堪的情況是雖然及時趕到站臺上，卻眼睜睜地看著那趟火車啟動，把你拋下。