掌握在自己手中;亲笔
The key to the knowledge Treasury is in one's own hand.
开启学问金库的钥匙在各自手中。
Written entirely in one's own hand.
完全是一个人自己写的。
On the other hand, perhaps there is something to be said for the convenience of downloading a libretto in one's own home rather than looking for it in a library or book store.
但是反过来看,或许尤为重要的是如果网
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