悬垂屈膝举腿。需引体向上杠杆。(视频)。

Hanging knee raises. Chinup bar required. (Video.)

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平卧曲举腿本质上就是平卧抬膝时将腿稍微伸直一点。

A bent leg raise is basically a knee raise with the legs straightened a little bit.

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举腿：在椅子上坐直，脚放在地板上，然后把膝盖弯曲尽力向胸靠拢。

Lifts: Seated in a chair with your back straight and your feet on the floor, squeeze knees together and gently bring them toward your chest.

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