Heels not only have to be the right height but in the right position: not too far back, but under the centre of the heel so they support your weight properly, following the natural line of your body.

鞋跟不仅要有一个合适的高度，也需要在正确的位置上：不能太靠后，要在脚后跟的中心，这样的鞋跟才能沿着你的身体曲线有效地支持你的体重。

youdao

When I ask him how he would describe his current position in the company, since it has no official description, he says, "Moral centre."

由于没有正式头衔，当我问他该如何定位自己目前在公司的角色时，他告诉我，“道德核心人物。”

youdao

You would give him the ball and he wasn't a typical centre forward. He wouldn't just lay it off and move into position.

罗纳尔多不同于传统意义上的前锋，他不光只是摆脱盯防，跑到位置上，等着别人的传球。

youdao

He missed his entire first year in union because of injury and was briefly tried at flanker before being moved to the centre position.

BBC: Farrell ruled out of England side

The 17-stone powerhouse, normally a full-back or wing, has been training in the centre position for his region, with the new season two weeks away.

BBC: Blues to move Roberts to centre

This will also affect London which may have won the crown as world leading financial services centre but that position is very precarious.

BBC: City Diaries: 15 October