| 词汇 | estrous-cycle |
| 释义 | estrous cycle noun[ C ] biology specialized(alsoestrus cycle); (UK alsooestrous cycle, oestrus cycle)uk /ˈiː.strəs ˌsaɪ.kəl/ us /ˈes.trəs ˌsaɪ.kəl/ the series of physical changes that a female animal repeatedly goes through, during which she becomes fertile(= able to become pregnant) and willing to mate(= have sex): （雌性动物）发情期，求偶期 Female llamas do not go into "heat" or have an estrous cycle.雌性羊驼不会进入“发情”状态，也不会有发情周期。 There are drugs that stop the oestrous cycle without causing serious side effects.有些药物可以停止动物的发情周期而不引起严重的副作用 Related word estrus Compare menstrual cycle We observed stress-induced changes in appetite, physical activity, weight gain and the estrous cycle of the rats. Diestrus is the stage of the estrous cycle which occurs after the animal goes out of heat. When a group of female mice is placed with a male their oestrous cycles become synchronized. She said she was told by a vet that he would not spay her dog until the animal was older and had gone through an estrus cycle. Animal reproduction androgen anti-oestrogen asexuality asexually barrenness calve fertile impregnate oestrogen ovulate panmictic panmixia procreate procreation procreative propagation rut semen spawn sterile |
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