I fly C172. Each main landing gear has disc brakes and it’s powered by hydraulic power. It’s controlled by the rudder pedal.我驾驶 C172。该机每个主起落架均配备盘式刹车，由液压驱动，通过方向舵踏板控制。

If I find this problem before takeoff, I will report to the mechanics and ask them to fix it. If the brake system is inoperative before landing, I will report to ATC and request the longest runway for landing. After touchdown, I will use maximum thrust reverser and spoilers to stop the aircraft.若起飞前发现问题，会向机械师报告并要求维修；若着陆前刹车系统失效，会向空管报告并申请最长跑道着陆；接地后，使用最大反推和减速板使飞机停稳。

I will check whether the runway is long enough for takeoff or landing. If not, I will delay takeoff or land.会检查跑道长度是否满足起飞或着陆需求；若不满足，将延迟起飞或着陆。