We appreciate your interest in our firm, however, and thank you for writing.
我们感谢你对我们公司表示的兴趣,谢谢你的来信。
If you insist.
你硬是要这么做,我也没办法。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.