one's capable hands (idiom) ここでcapableなのは文字通りのhandsではなく様々な能力 It suggests that someone has the competence, talent, and ability to handle a task or responsibility effectively. It conveys a sense of trust and confidence in that person's abilities and judgment.
e,g,1 I'm leaving the project in your capable hands while I'm on vacation.
e.g.2 The surgery was performed by Dr. Smith, and I know the patient was in good, capable hands.
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