脚掌心

例句：

1. 1. He sat on the chair, his feet resting on the floor.
   他坐在椅子上，脚搁在地板上。
2. 2. The child's feet were cold from the snow outside.
   孩子的脚因为外面的雪而冷。
3. 3. She put her feet up on the sofa and closed her eyes.
   她把脚放在沙发上，闭上眼睛。