capacity可数吗?

　　例句：

　　He has a mind of great capacity.

　　他的理解能力极强。

　　She thinks its capacity is limited.

　　她认为它的容量是有限的。

　　I really admire his capacity for work.

　　我真钦佩他的工作能力。

　　His capacity to absorb information is amazing.

　　他理解信息的能力令人称奇。