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Intermediate
- Dictinary
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Strengthen
(v)
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| Strengthen
(v) : to make stronger;
give strength to. |
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| 1- It also needs enough exercise to strengthen
muscles and bones and reduce your chances of getting
sick. |
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| References
: http://www.englishcollocation.com - http://dictionary.reference.com
- http://www.learnamericanenglishonline.com/ |
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