肌肉的

例句：

1. 1. He lifted the heavy box with ease, showing off his strong muscles.
   他轻松地举起了那个重箱子，展示了他的强壮肌肉。
2. 2.The marathon runners are known for their incredible endurance and impressive muscle definition.
   长跑运动员以其惊人的耐力和令人印象深刻的肌肉线条而闻名。
3. 3. The gymnast's routine included a series of impressive gymnastic moves that showcased her lean and toned muscles.
   这位体操运动员的表演包括一系列令人印象深刻的体操动作，展示了她苗条且结实的肌肉。