Obviously no one expects that women will stop dressing up in heels altogether, but if you limit the amount of wear time and the heel's height you're, um, taking a step in the right direction.
显而易见没人会期待女性完全放弃高跟鞋，但是如果控制你穿写的时间以及鞋跟的高度，你就正在向着正确的方向迈进。
Sometimes the limit is allowed in only one direction. This is known as unilateral tolerance.
有时限度只在一个方向产生，这种行为即是单向公差。
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