elem elementary的用法和樣例：
例句
- The professor combusted when the student didn't know the answer to a very elementary question.
當發(fā)現這名學(xué)生連一個(gè)非?；A的問(wèn)題都不懂時(shí)，教授發(fā)火了。 - We must pay attention to elementary school, because it lays the foundation for our children's education.
初等教育是打基礎的階段，我們一定要重視起來(lái)。
