Endocrine describes the system in your body that makes hormones — chemical messengers that travel in the blood and tell organs what to do. The endocrine system includes glands such as the thyroid, the pituitary, and the adrenals. An endocrine gland secretes its hormone inside, into the bloodstream, rather than out through a tube.

Endocrine內分泌的，describes the system in your body that makes hormones是用來形容身體裡製造荷爾蒙的那個系統——chemical messengers that travel in the blood and tell organs what to do荷爾蒙就是隨血液流動、告訴器官該做什麼的化學訊使。The endocrine system includes glands such as the thyroid, the pituitary, and the adrenals內分泌系統包括甲狀腺、腦下垂體、腎上腺這類腺體。An endocrine gland secretes its hormone inside, into the bloodstream內分泌腺會把荷爾蒙分泌到體內、進入血液，rather than out through a tube而不是透過導管排到體外。

It is a science and medical word; you will meet it in biology class and at the doctor’s, not in everyday chat. Though actually, people sometimes just say “hormones” when they mean this whole system, which is close enough in daily talk.

It is a science and medical word這是科學和醫學用語；you will meet it in biology class and at the doctor’s, not in everyday chat你會在生物課和看醫生時遇到它，不是日常聊天會用的字。Though actually不過其實，people sometimes just say “hormones” when they mean this whole system大家有時候講整個系統，會直接說「hormones（荷爾蒙）」，which is close enough in daily talk在日常對話裡這樣講也算夠接近了。

The contrasting idea is exocrine: those glands send their product out, like sweat or saliva, through a duct.

The contrasting idea is exocrine跟它相對的概念是 exocrine（外分泌）：those glands send their product out, like sweat or saliva, through a duct那類腺體會把分泌物（像汗水或唾液）透過導管排到體外。

You may also see endocrine as a noun meaning an endocrine gland, but the usual meeting is the adjective: endocrine system, endocrine disorder.

You may also see endocrine as a noun meaning an endocrine gland你也可能看到 endocrine 當名詞用，指內分泌腺本身，but the usual meeting is the adjective不過一般常見的是當形容詞用：endocrine system, endocrine disorder像 endocrine system（內分泌系統）、endocrine disorder（內分泌失調）。