harder例句
The
harder the brake pedal is pressed, the greater the car's deceleration.
刹车踩得越用力，车子减速越猛。
Desegregation may be
harder to enforce in rural areas.
要废除农村地区的种族隔离可能会更困难一些。
Age diminishes the heart's ability to pump
harder and faster under exertion.
随着年龄的增加，人在消耗体力时心脏的输血能力和输血速度会有所减弱。