understructure

Moreover, understructure work's excavation work has not completed by far, perhaps there is hiding the true secret.

而且，地下工程的挖掘工作远远没有完成，也许那里才隐藏着真正的秘密。

Further adding to occupant safety, frontal impacts are absorbed by crumple zones directed into Y-shaped chassis members and the main understructure – the strongest part of the chassis.

正面的撞击区吸收并传递到Y型底盘部件和主要支承构-地盘最坚实处，从而进一步保护乘客安全。