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警戒， けいかい

1. vigilance, caution, alertness, precaution, being on guard

警戒

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に越したことはない， に超したことはない， にこしたことはない

1. it's best to, it's safest to, there's nothing better than

tbd

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する， 為る

1. to do, to carry out, to perform 2. to cause to become, to make (into), to turn (into) 3. to serve as, to act as, to work as 4. to wear (clothes, a facial expression, etc.) 5. to judge as being, to view as being, to think of as, to treat as, to use...

做，作，干，执行

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