沃尔沃为福特和它的其他品牌贡献了防撞预警系统、乘客约束技术和其他安全设备。
Volvo contributes collision warning systems, passenger-restraint technology and other safety equipment used by Ford and its other brands.
从承运的乘客数来看，MARTA是全国第九大公交系统，但它背负着两个很沉重的约束。
It is the country's ninth-largest system by passenger Numbers, but it labours under two onerous constraints.
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