我们不会再犯同样的错误。
还能这样说：
The same mistake is not allowed to appear again.
The same mistake will never happen again.
谚语：
He who makes no mistake make nothing.
不犯错误的人必然一事无成。
10. We design to raise the price of the products,or we won't earn profits.
我们计划提高产品价格，否则就会无利可图。
还能这样说：
In order to make a profit, we decide to raise the price.
Only by raising price can we make profits.
应用解析：
fat profit 巨额利润;
make a profit on 在……上获利;
to one's profit 有益
11. We hope that we can expand our company next year.
我们希望明年能扩大公司规模。
还能这样说：
We wish the scale of our company can be larger next year.
We have the expectation that our company can be expanded next year.
应用解析：
expand sth. into sth. 把某物扩展为……;
expand on sth. 阐述或详述某物;
expanded metal 拉直金属网
12. We hope that you can arrange a negotiation with your president.
我们希望能安排一个和你们总裁的洽谈。
还能这样说：
We hope that we can negotiate with your president.
We wish that we can have an official conversation with your president.
应用解析：
arrange for sb. to do sth. 使某事发生，确保某事发生;
arrange with sb. about sth. 与某人商定某事;
arrange sth. for sth. 改编乐曲等;
arranged marriage 媒妁婚姻;
at the arranged hour 在约定时刻