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，这一称为膀胱三。

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

膀胱三是膀胱后下壁一个三。

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

道在膀胱三低点离开。

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.

膀胱三对牵张十分敏感，当它被牵拉到一定程度，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.

口腔表面由未化复层鳞状上皮覆盖结构，包括颊黏膜、口底、舌侧面和腹侧（或底面）、软腭与磨牙后三。

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.

膀胱底部有一个光滑三，称为膀胱三；其中两顶端为输管-膀胱连接处，第三定点为道内口；膀胱与道通过道内口相通。