9. Let me know what happens.
告诉我结果。
还能这样说：
Tell me the outcome.
Please tell me the result.
应用解析：
outcome通常作单数，意思是：结果，效果。

10. I am satisfied with the smoothness of the negotiation.
我对谈判的顺利进行很满意。
还能这样说：
I am pleased with the smoothness of the negotiation.
The smooth negotiation is to my satisfaction.
应用解析：
be in negotiations with sb. over sth. 与某人协商某事；
break off negotiations 中断谈判；
enter into negotiation with sb. 开始与某人进行谈判

11. Our CB series are selling like hot cakes.
我们的CB系列卖得非常好。
还能这样说：
Our CB series are selling so well.
Our CB series are selling like crazy.
应用解析：
cakes and ale 生活中的乐事，吃喝玩乐；
get a share of the cake 得到应得的一份利益；
have one's cake and eat it （在两者中只可得其一时）两者兼得；
take the cake 极其可笑、讨厌、惊奇等