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汉语拼音：jī sù

旧称荷尔蒙。人和动物的内分泌腺分泌的物质。是调节新陈代谢、维持正常生理活动所必需的。任何一种激素的过多或不足，都会引起内分泌疾病。甲状腺素、肾上腺皮质激素、胰岛素等都是激素。

1. 人和动物内分泌腺分泌的物质的统称。它依靠血液和淋巴液的作用直接影响体内各器官的活动。如胰岛素、甲状腺素等。旧称荷尔蒙。引申指起促进作用的事物。

   《收穫》1981年第3期：“只是那一天天冷却的心却仍然在渴望找到一种能使振奋的激素。”

• Hormone replacement therapy is very important and should be instituted early.

  激素替代治疗非常重要，应该及早开始。

• Hormone implants are used as growth boosters.

  激素植入物被用作生长辅助剂.

• Hormones are secreted into the bloodstream.

  分泌的激素进入到血液中.

• She has been on hormone replacement therapy for four years and looks fantastic.

  她接受激素替代治疗已经4年了，看起来容光焕发。

• Hormones regulate many insect functions, including ecdysis and metamorphosis.

  激素调节昆虫的许多功能，包括蜕皮和变态。

• Oversecretion of the male hormone androgen can also result in thinning hair.

  雄性激素分泌过多也会导致头发稀疏。

• Florigen, or the flowering hormone, has been sought by many researchers.

  许多研究者都在寻找成花素或开花激素.

• The hormone is responsible for the development of sexual drive.

  这一激素对性冲动有着重要作用.

• The hormone that stimulates gall bladder contraction was called cholecystokinin.

  刺激胆囊收缩的激素被称为胆囊收缩素.

• It is also an endocrine gland secreting at least two important hormones.

  它也是一种内分泌腺,至少分泌二种重要的激素.

• Moreover, the juvenile hormone of insects is closely related to farnesol.

  此外, 昆虫的“返幼”激素和法尼醇密切相关.

• The control of pancreatic secretion is performed mainly through 2 hormones.

  胰腺的分泌作用主要为两种激素控制.

• Nursing stimulates further production of prolactin and, therefore, of milk.

  哺乳本身刺激催乳激素的产生, 从而生产更多的乳汁.

• The main function of this hormone is to control growth.

  这种激素的主要功能是控制生长.

• Epoxidation and oxidation gave the racemic C 18 - juvenile hormone.

  通过环氧化和氧化就得到外消旋的含十八个碳的昆虫返动激素.