汽车运输安全管理局已在考虑将商业驾驶的医师证明标准规定得更紧。
The motor carrier administration is already considering a rule to tighten its standards for medical certification of commercial drivers.
汽车运输安全管理局已在考虑将商业驾驶的医师证明标准规定得更紧。
The motor carrier administration is already considering a rule to tighten its standards for medical certification of commercial drivers.
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