lack
noun
/læk/
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- A deficiency or need (of something desirable or necessary); an absence, want.
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不足,
欠乏
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lack
verb
/læk/
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- (transitive, stative) To be without, not to have, to need, to require.
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欠く,
欠ける
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lacking
adjective
/ˈlækɪŋ/
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- Missing or not having enough of (a good quality, etc).
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いまいち
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