Last Updated
：2025/12/03
have down to a science
（ present singular third-person ）
（ participle present ）
（ participle past ）
（ past ）
Quizzes for review
know something backwards, know something inside and out
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have down to a science
After months of training, they have down to a science how to perform the procedure quickly and safely.
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After months of training, they have down to a science how to perform the procedure quickly and safely.
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English - English
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