Our injury rate -the number of incidents like slips, trips and falls -has come down by approximately 50% since 1999.
自1999年以来，我们的伤亡率像单，旅游和瀑布的事件数量已经下降了约50%。
Our injury rate -the number of incidents like slips, trips and falls -has come down by approximately 50% since 1999.
自1999年以来，我们的伤亡率像单，旅游和瀑布的事件数量已经下降了约50%。
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