Rectal is a doctor's word. It means “about the rectum” — the last part of the bowel, just before the opening in your bottom. You meet it on medicine boxes and in hospitals more than in ordinary talk.

Rectal直腸的 is a doctor's word是醫生用的詞 It means 'about the rectum'它的意思是「跟直腸有關」 — the last part of the bowel也就是腸道的最後一段 just before the opening in your bottom就在肛門開口之前 You meet it on medicine boxes and in hospitals你會在藥盒上和醫院裡遇到它 more than in ordinary talk比在日常對話裡更常見

A rectal thermometer is one you put in the bottom; a rectal exam is when a doctor checks that part of the body with a gloved finger; rectal medicine is meant to go in that way, not in the mouth.

A rectal thermometer肛溫計 is one you put in the bottom是從肛門放進去量的體溫計；a rectal exam直腸檢查 is when a doctor checks that part of the body with a gloved finger是醫生戴著手套從那裡檢查身體的檢查；rectal medicine肛門用藥 is meant to go in that way, not in the mouth是要從那裡進去，不是用吃的

The word itself is not rude. It is cold and clinical. At home people usually dodge it and say “bottom” or “from behind.” You would not call a friend rectal; you only use it for the body part or the medical route.

The word itself is not rude這個詞本身並不粗魯 It is cold and clinical它是冷冷的、臨床式的 At home people usually dodge it and say 'bottom' or 'from behind.'在家常對話裡人們通常會避開它，改說「bottom（屁股）」或「from behind（從後面）」 You would not call a friend rectal你不會用 rectal 來形容一個朋友；you only use it for the body part or the medical route你只會用它來指身體部位或給藥的途徑