Sera
浆液, 血清\\n[医] 血清; 浆液
🗣️ 情景例句
I can't wait to tell Richard!
我简直迫不及待想告诉Richard！
I am honored by the invitation.
承蒙招待，深感荣幸。
But animals of this age do not easily become subservient to man,
但这个年龄的象不易驯服，