- 问题详情:Onahotday,manypeopleliketogotothebeach.Somebeaches,however,arenotsafeforswimming.Atsomebeaches,therearesharksinthewater.Sopeopleputoutsharknets.Theyhelpstoptoomanysharksfromgettingclosetothebeach.Sharkscanstillswimunderoraroundthenet.Butifthe...
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