例句：
People are still terribly apprehensive about the future.
人们对于将来仍然非常担心。
She was apprehensive about her son's safety.
她很担心儿子的安全。
The book was written in a style appropriate to the age of the children.
这本书的文体适合儿童阅读。
Jeans are not appropriate for a formal party.
正式聚会上穿牛仔裤不合适。
he has access to all manner of arcane knowledge that even I do not.
她知道各种神秘的知识，很多我都没听说过。