腎 腎の臓 腎臓
either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine
血液から排泄物を濾過し（特に尿素）、それらを排泄し水分の中に分泌液を出す2つの豆形の排泄器官のどちらか
urine passes out of the kidney through ureters to the bladder
尿は腎臓から尿管を通じて膀胱へ送られる