Mobilephonesareeverywhereandsometimestheycanbeveryannoy...
問題詳情：Mobilephonesareeverywhereandsometimestheycanbeveryannoying.Mostpublicplaceshavemobilephonerules.Sotrytokeepyourphoneringeraslowaspossibleorputitonvibrationmode（震動模式）inpublic.Agoodtimetoleave...