The foot ball field is enclosed by a wall.

足球场被一道墙围了起来。

youdao

Hardly had the foot ball game begun when it started raining.

足球比赛才刚刚开始就下起雨来。

youdao

He gave the ball a boot by the other foot.

他用另一只脚重重地踢了一下这球。

youdao

Then he would fall down on the floor again like a ball of dirt and start rubbing the side of his head with his back foot as if he had no idea he had been doing any more than any frog might do.

VOA: special.2009.08.29

It's a little easier to hit the ball hard to the opposite side from the side which is your foot and that's the same principle in baseball.

从另一侧击球更容易发力,在棒球中这个道理也是适用的

耶鲁公开课 - 博弈论课程节选

With Sale on the back foot, the ball was spread down the line and outside centre Jamie Noon fed Williams to score in the corner.

BBC: Sale 25-32 Newcastle

But it was the briefest of honeymoons for Cook, lasting only until the last ball of the eighth over, when he played a half-hearted force off the back foot to a ball well wide of off-stump - and to the delight of the bowler Hilfenhaus, Michael Hussey dived expertly in the gully to take a fine one-handed catch.

BBC: England make solid start to Ashes

This is the perfect length to get on the front foot and ease the ball through the covers or mid-off.

BBC: Introduction