Be entirely ignorant of something 对某方面东西不了解 ; 无知 ; 对某方面工具不领会
be entirely ignorant of 形容非常黑暗
To be entirely ignorant of the Latin language is like being in a fine country on a misty day. The horizon is extremely limited. Nothing can be seen clearly except that which is quite close;
不懂拉丁文的人就像是在雾天去到一个不错的国家，他面前的视野非常狭窄，只能看到眼前的一点点东西，超出几步范围以外的东西都变得模糊起来了。
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