appreciation是可数吗

　　One's appreciation of literature depends on one's level of aesthetic knowledge.

　　一个人对文学作品的欣赏能力，取决于他的艺术修养。

　　She shows little appreciation of good music.

　　她感受不到美好音乐的妙处。

　　I had no appreciation of the problems they faced.

　　我没有体谅到他们所面临的困难。

　　The crowd murmured in appreciation.

　　人群低声赞叹着。