The ureters enter the bladder diagonally from its dorsolateral floor in an area called the trigone.

输管从膀胱背外侧斜向进入膀胱，域称为膀胱三角。

The trigone is a triangular shaped area on the postero-inferior wall of the bladder.

膀胱三角是膀胱后下壁的个三角形域。

The urethra exits at the lowest point of the triangle of the trigone.

道在膀胱三角的最低点离开。

The trigone region is very sensitive to expansion and once it stretches to a certain point, the bladder sends a signal to the brain - that it's time to pee.

膀胱三角对牵张十分敏感，当它被牵拉到，膀胱便向大脑发出信号——该了。

The oral surfaces covered by non-keratinized stratified squamous epithelium include the buccal mucosa, the floor of the mouth, the lateral and ventral (or bottom) surfaces of the tongue, the soft palate, and the retromolar trigone.

口腔表面由未角化的复层鳞状上皮覆盖的结构，包括颊黏膜、口底、舌的侧面和腹侧（或底面）、软腭与磨牙后三角。

The floor of the bladder has a smooth triangular region called the trigone region - with two corners at the ureterovesical junctions and the third corner being the internal urethral orifice, where the bladder meets the urethra.

膀胱的底部有个光滑的三角形域，称为膀胱三角；其中两角顶端为输管-膀胱连接处，第三角点为道内口；膀胱与道通过道内口相通。