The renal papilla project into minor calyces which join together to form major calyces which funnel into the renal pelvis.

肾乳头突入肾小盏，每2-3个肾小盏合肾大盏；2-3个肾大盏合并斗的肾盂。

The medulla is made up of 10 to 18 renal pyramids with the base of the pyramids facing the renal cortex and the tips of the pyramids, called renal papilla—or nipples, pointing towards the center of the kidney.

髓质由10-18个肾，每个基底面朝向皮质；而尖端称作肾乳头，则朝向肾的中心。

And then we look in a little more detail, you can see the individual papillae come up, and there are little ridges on there, so it's a papilla on papilla and so forth.

然后我们看得更详细一点，你可以看到单个乳突出现， 那里有小脊，所以它是乳突上的乳突等等。