舵

例句：

1. 1. Thecaptain used the rudder to turnthe ship around.
   船长使用舵使船转向。
2. 2. The pilot adjusted the steering wheel tochange course.
   飞行员调整方向盘改变航线。
3. 3. Theboat's engine was out, sowe had to use the rudderto stay afloat.
   船的引擎坏了，所以我们不得不用舵保持浮力。