prolactin + [verb] + [noun phrase]
动词常用一般现在时，表示普遍事实。
Prolactin stimulates milk production in mammals.
催乳激素刺激哺乳动物的乳汁分泌。
催乳素；泌乳素
由垂体分泌的一种肽类促性腺激素；促进女性乳腺生长和泌乳。；由垂体前叶分泌的促性腺激素；在女性中,它在分娩后刺激乳腺生长和泌乳。；催乳激素；[化] 促乳素
A hormone secreted by the pituitary gland that stimulates milk production and growth of the mammary glands in females.
由垂体分泌的一种肽类促性腺激素；促进女性乳腺生长和泌乳。
A peptide gonadotrophic hormone secreted by the pituitary gland; it stimulates growth of the mammary glands and lactation in females.
由垂体前叶分泌的促性腺激素；在女性中,它在分娩后刺激乳腺生长和泌乳。
gonadotropic hormone secreted by the anterior pituitary; in females it stimulates growth of the mammary glands and lactation after parturition
Prolactin levels rise during pregnancy to prepare the breasts for milk production.
怀孕期间催乳激素水平升高，为乳房产奶做准备。
用法提示：以名词形式出现，指代一种激素，在句中作主语，描述其生理作用。
The doctor ordered a blood test to check her prolactin concentration.
医生要求验血检查她的催乳激素浓度。
用法提示：名词，用作定语修饰concentration，表示与催乳激素相关的浓度。
High prolactin can interfere with normal ovulation and cause infertility.
高催乳激素会干扰正常排卵并导致不孕。
用法提示：名词，用作主语，与high搭配表示激素水平高的情况。
动词常用一般现在时，表示普遍事实。
Prolactin stimulates milk production in mammals.
催乳激素刺激哺乳动物的乳汁分泌。
常用定冠词 the，后接 of 短语表示来源或条件。
The secretion of prolactin increases during pregnancy.
催乳激素的分泌在怀孕期间增加。
levels 为复数，动词用复数形式。
Prolactin levels rise significantly after childbirth.
催乳激素水平在分娩后显著升高。
与 prolactin 完全同义，可互换使用；但 lactogenic hormone 更偏描述性，常见于生理学教材，日常写作仍以 prolactin 为主。
grammar · medium
易错句子The test shows high prolactins.
正确表达The test shows high prolactin levels.
催乳激素是不可数名词，不能直接加复数；表示数量时需加上“levels”这类量词。
grammar · medium
易错句子The gland prolactins milk after childbirth.
正确表达The gland secretes prolactin to produce milk after childbirth.
Prolactin是名词，不能作动词；应使用动词“secrete”表达分泌动作。
grammar · medium
易错句子Prolactin is essential for maintaining pregnancy.
正确表达Prolactin is essential for milk production after childbirth.
容易与孕酮混淆：催乳激素作用于泌乳，而非维持妊娠。
催乳素（促乳） vs 催产素（促宫缩和排乳）：前者促进乳汁生成，后者促进乳汁排出和子宫收缩。
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