Nootropics
[医]促智药
🗣️ 情景例句
We have finally concluded the transaction through negotiation.
经过谈判，我们终于达成了一笔交易。
I'm afraid all my efforts were in vain.
我担心我的努力全白费了。
The Bison on the Plains of America
美洲平原上的野牛