mammary gland

US /ˈmæm.ə.ri ˌɡlænd/
UK /ˈmæm.ə.ri ˌɡlænd/
"mammary gland" picture
1.

乳腺, 乳房腺

a milk-producing gland in female mammals, such as humans and cows, that secretes milk to nourish offspring

:
The cow's mammary gland was full of milk.
牛の乳腺はミルクでいっぱいだった。
Human mammary glands develop during puberty.
人間の乳腺は思春期に発達する。