独脚架

例句：

1. 1. The engineer used a special stand to fix the machine.
   工程师使用一个特殊的支架来固定机器。
2. 2. He sat on the ground with his leg rested.
   他坐在地上，用腿支着。
3. 3. The doctor advised him to use the leg rest while resting.
   医生建议他在休息时使用腿托。