1·I attended the business diligently, studied accounts, and grew, in a little time, expert at selling.
我孜孜不倦，照料业务，学习算帐，时间不长，我在经销方面就很内行了。
2·Diligently seek to obey every word from God, for you do not know how your disobedience could affect those around you.
孜孜不倦的追求神的话语，因为你不知道你的悖逆会对身边的人产生多大影响。
3·Therefore, Mr. Chang is worthily a diligently cultural ambassador.
因此，常先生不愧为一位孜孜不倦的文化大使。