n.输尿管造口术
The urethra originates at the neck of the bladder.
尿道起始于膀胱颈部.
The sick cow frequently attempts urination and pulsates the urethra over the ischium arch.
病牛频频企图排尿,搏动坐骨弓上的尿道.
The clistressed cow frequently attempts urination and pulsates the urethra over the ischial arch.
病牛频频企图排尿,坐骨弓上的尿道发生搏动.