If your foot is at a right Angle to your outstretched leg and does not dangle, you have a low ankle-joint axis and will be more comfortable in flat shoes than in high heels.
如果你的脚和你伸直的腿成直角，且没有晃荡，那么说明你有一个较低的踝关节，你穿平底鞋会比穿高跟鞋更舒适。
Two pink foam dice dangle behind the pilots' heads, and a rabbit's foot juts from the dashboard.
飞行员的头后面悬挂着两个粉红色泡沫骰子，一只兔脚从仪表板上伸出来。
Finally, letting one foot dangle can help you attain a lower body position and thus save energy by allowing you to hang from straight arms.
最后，让一只脚摆动来帮助你获得较低的重心，从而可以伸直手臂节省能量。
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