1.I have to say that...
Reference:我认为...

2.business management
Reference:经营管理

3.由于...,所以...
note:用了due to...后要学会将to 后内容都转化为名词性形式
Reference:...,due to...

4.直率
Reference:direct and straightforward

5.I can't say our way of doing business is absolutely superior.
note:尤其是句首:I can't say...的参考翻译
Reference:我无法断言,我们的经营方式一定在他们之上.

6.优点和弊端
note:翻出来后,还要注意,...的优点和弊端,用什么介词
Reference:strong and weak points in...

7.近年来,...
Reference:In recent years,...

8.business executives
Reference:经理人员

9.毕竟,...
Reference:After all,...

10....已认识到...
Reference:...have recognized...