gray [sth] out (US),
grey [sth] out (UK) vtr phrasal sepphrasal verb, transitive, separable: Verb with adverb(s) or preposition(s), having special meaning, divisible--for example, "call off" [=cancel], "call the game off," "call off the game." | (computing: disable) (计算机) | 使…呈现灰色而禁用
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