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

输管从背外侧斜向进入，这一区域称三角。

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

三角是后下壁的一个三角形区域。

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

道在三角的最低点离开。

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.

三角对张十分敏感，当它到一定程度，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.

的底部有一个光滑的三角形区域，称三角；其中两角顶端输管-连接处，第三角定点道内口；与道通过道内口相通。