characteristics and present situation的用法和樣例：
例句
- The developing course and present situation of PET staple fiber indust ry in China were outlined.
簡述了我國滌綸短纖維技術的發展過程及現狀。 - First, the article summarily looks back on the developing course and current situation of American chain drugstores so as to use it as an example.
文章首先概括的對美國醫藥連鎖的發展歷程及現狀進行了回顧，希望能起到他山之石的作用。
