experiences可数吗?

　　We'll hold a meeting to exchange experiences.

　　我们将开个会来交流经验。

　　We cannot apply mechanically other people's experiences.

　　我们不能生搬别人的经验。

　　Everyone experiences these problems at some time in their lives.

　　每个人在人生的某个阶段都会经历这些问题。

　　Positive and negative experiences form a child's character.

　　正反两方面的经历都影响儿童性格的`形成。

　　He hopes to write a book about his experiences one day.

　　他希望有一天写一部关于自己经历的书。