¡i©ú³ø±M°T¡j¡§ MoMo: A 16-pound ball is too heavy for you! ¡¨ A bowling ball weighs 16 pounds (7.26 kg) at most. As a general practice, a bowler should choose a bowling ball about 10% as heavy as he/she is. For example, a 120-pound bowler should consider rolling a 12-pound ball. [Smarties' Power English Vol 182]
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