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It is also the reason why when we try to describe music with words, all we can do is articulate our reactions to it, and not grasp music itself.
1.重点词汇及短语：
describe…with… 用……描述……
articulate 【生义】v. 清楚地表达，描述【熟义】adj. 明晰清楚的
reaction n. 反应
grasp v. 理解，领会(尤指复杂的事情或观点)
2.句子成分分析：本句为主从复合句，主干是It is also the reason...。why引导定语从句，解释说明the reason。定语从句中包含了一个时间状语从句when we try to describe music with words。关系副词why引导限定性定语从句，修饰先行词reason， 在定语从句中充当原因状语。例如： He didn’t tell me the reason why he was so upset. 从句引导词选用关系副词why还是关系代词that/which，取决于先行词reason在从句中充当的成分：先行词reason在从句中作副词性成分，应该用why。例如：Please tell me the reason why he was late.(先行词reason在从句中作原因状语);先行词reason在从句中作名词性成分，应该用that/which。例如：Please tell me the reason that/which made him late.(先行词reason在从句中作主语)
3.参考译文：这也是为什么当我们试图用语言描述音乐时，我们只能表达出自己对音乐的感受，而无法领悟音乐本身。