Aggressin
[医] 攻击素
🗣️ 情景例句
for coming all this way from the city to talk to me about it.
从城里大老远赶来和我谈这件事。
I'm tired.
我累了。
This is supposed to induce pleasurable sensations in the elephant,
据说这是为了使象产生愉快的感觉，