So, the student of war who is unversed in the art of war of varying his plans, even though he be acquainted with the Five Advantages, will fail to make the best use of his men.

治兵不知九变之术，虽知五利，不能得人之用矣。

A distant village of blacks had furnished her with a mantle of fur and feathers, with copper ornaments, and weapons, for Korak would not permit her to go unarmed, or unversed in the use of the weapons he stole for her.

一个遥远黑人村庄为提供了一件毛皮和羽毛斗篷、铜饰和武器，为科拉克不允许手寸铁，或者不熟悉他为偷来武器使用。

They were indeed excellent in two sciences for which I have great esteem, and wherein I am not unversed; but, at the same time, so abstracted and involved in speculation, that I never met with such disagreeable companions.

他们确实精通两种我非常尊敬且颇有研究科学，但同时又如此深陷于抽象理论中，以至于我从未遇到过这么让人不愉快同伴。