However, the availability of properly-fitted and appropriate personal flotation devices in boats is an effective drowning prevention strategy.
然而，船上妥善安装适当的个人漂浮装置是一种有效的预防溺水策略。
However, the availability of properly-fitted and appropriate personal flotation devices in boats is an effective drowning prevention strategy.
然而，船上妥善安装适当的个人漂浮装置是一种有效的预防溺水策略。
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