undercarriage
US
UK undercarriage n: (car, etc.: framework) (汽车)
SC 底盘 dǐ pán
Rust had caused serious damage to the undercarriage of the car.
undercarriage n: (plane: landing gear) (飞机)
SC 起落架 qǐ luò jià
The pilot lowered the undercarriage of the plane in preparation for landing.