have a grasp of Thành ngữ, tục ngữ
have a (good/solid/sound/etc.) grasp of/on (something)To have a firm, clear understanding or determination of something. I hope everyone has a solid grasp of the material, as you'll be tested on it next week. I thought I had a pretty good grasp on English idioms, but I don't understand this one at all!See also: grasp, have, of, on, solid, sound
have a grasp ofsee under get a fix on. See also: grasp, have, ofSee also:
have a grasp ofhave a grasp of see under get a fix on.
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