我们必须保护员工。
将铁路员工的安全与列车控制相结合，可以在保证载客量的同时，更高效地保护员工安全。
Integration of roadway worker safety and train control can create efficiencies that protect workers while preserving capacity.
与此同时，我们可以清楚的看到一些优秀企业为了控制污染和保护员工安全时也会选择捷径。
At the same time, it is clear that even well-meaning corporations sometimes take shortcuts when it comes to controlling pollution and protecting worker safety.
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