surface of the soil

例句：

1. 1.The car's engine is located on the bottom of the vehicle.
   汽车的发动机位于车辆底部。
2. 2. The scientists found a new species on the surface of Mars.
   科学家们在火星的表面发现了一种新的物种。
3. 3. The company's profits have increased significantly due to the expansion of its surface operations.
   由于扩大了其表面运营，该公司的利润显著增加。