求大神指点

sukimutingfangUID??3356741

在某篇作文上  看到如下的句子  很是纠结，求指点

1.musicians have to have the muscular proficiency of an athlete or a ballet dancer
2.they have to aim at controlling these sounds with fanatical but selfless authority.
3.Great artists are those who are so thoroughly at home in the language of music that they can enjoy performing works written in any century.

第三句的这个at home 我查了有熟悉的意思，但是可以这么使用么