副詞 underfoot:

1. under the feet
2. in the way and hindering progress

1. Pets, toys, and children underfoot.
   礙手礙腳的寵物，玩具和孩子
2. The snow underfoot wassoft and deep.
   腳下的雪又軟又厚。
3. It's muddy underfoot.
   地上很泥濘。
4. Fallen riders were trampled underfoot by the charging horses.
   摔下來的騎手遭飛奔馬群踐踏。