A bent legraise is basically a knee raise with the legs straightened a little bit.
平卧曲举腿本质上就是平卧抬膝时将腿稍微伸直一点。
2
If you happen to be very flexible, he can raise your leg high, possibly to his shoulder, creating a very open pose.
如果你碰巧很有柔韧性，他就可以把你的腿高高抬起，甚至是齐肩，创造一个非常开放的姿势。
3
If you're truly a monster, try doing leg lifts with a medicine ball hanging from your feet. Or hang from a pull up bar and raise your legs in front of you all the way up to the bar.