The structure is called the column. The column is the most important quality that identifies the orchid family.

VOA: special.2010.04.06

What would you say is the most important quality when you're trying to start your own business?

当你尝试创业的时候，你觉得什么品质是最重要的呢？

要想成为事业家 - SpeakingMax英语口语达人