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 it became clear that the wealth being created on paper was out of line with the real value of the homes themselves, the pyramid fell under its own weight.

当纸面的财富价值明显不符合住房实际价值时，金字塔被自己的重量压垮。

youdao

Lifestyle changes (adopting a healthy diet, getting out for regular exercise, avoiding tobacco, losing weight) are the first line of defense, even if drugs are needed too.

生活方式的改变是第一位的(健康饮食，定期锻炼，避免吸烟和减轻体重)，必要时需要借助药物。

youdao

The next line says if the weight of i is greater than a w, well then I know I can't put it in.

下一行说的是,如果i的重量比a，w大，好吧，我知道我不能把它放进去。

麻省理工公开课 - 计算机科学及编程导论课程节选

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