Caleb Dobbins is New Hampshire's highway maintenance engineer.

Caleb Dobbins 是新罕布什尔州的公路维修工程师。

A total of 1.29 trillion yuan has been channeled into highway maintenance and addressing highway safety hazards in recent years, according to the ministry.

近年来全国累计投入 1.29 万亿元资金用于公路养护及安全隐患治理。