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

"The team on Monday will be a very young defensive line-up, with Jones and Evans in the centre and Smalling at right-back," revealed the manager.

“周一的球队防线将很年轻，琼斯和埃文斯打中路、斯莫林打右后卫，”经理说。

youdao

But even when fit, the Swiss centre back is not taking his place in the Arsenal starting line-up for granted.

但是即使他身体无恙，瑞士中后卫也不认为他理所当然应该获得首发。

youdao

Saha, on his 200th Premier League appearance, controlled the ball and struck it low beyond the advancing James after a pass from the half-way line eluded centre-back Younes Kaboul.

BBC: Portsmouth 0-1 Everton

Ten minutes from half time, Darwen were denied once more, this time when a Martin Parker effort was acrobatically hooked off the line by Blackpool centre-back Paul Carroll.

BBC: Defeat heightens Darwen concerns

Replacement hooker Rhys Thomas followed Rush to the line and Calvisano struck back when centre Matteo Pratichetti finished off a breakaway and Fraser converted.

BBC: Cardiff Blues 62-20 Calvisano