下门牙或下颌突出的下颌或牙突出超过上颌或牙的；
Having the lower jaw or teeth projecting beyond the upper; underhung.
剪状咬合，严重的下颌突出或上颌突出都属于有缺陷。
Teeth Scissors bite. A badly undershot or overshot mouth is a fault.
国字脸：这种脸型轮廊很鲜明，下颌线条突出，前额、下巴以及两颊的颧骨骨都相对较宽。
Square face: This face has strong angles, strong jaw, wide forehead, wide chin and wide cheekbones.
应用推荐