Arm flat and muscular.Bone substantial but not coarse and muscles hard and devoid of flabbiness.

臂膀平且肌肉发达，骨骼坚实，但不粗糙，且肌肉坚硬，没有软样子。

After the Three Gorges Reservoir impounded, due to the rise of ground water, the flabbiness layers in landslides will become soft and collapse when they meet water.

三峡库区蓄水后,由于水位上升滑坡地区软层遇到水就会变软并引起滑塌。