Because the two irregular surfaces no longer sit properly on one another, pressing them together tightly (as occurs strongly while sitting) causes pain.
因为他们俩的表面都不规整，所以受到挤压的时候(特别是坐着)，就会疼。
Because the two irregular surfaces no longer sit properly on one another, pressing them together tightly (as occurs strongly while sitting) causes pain.
因为他们俩的表面都不规整，所以受到挤压的时候(特别是坐着)，就会疼。
应用推荐