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A cow's estrus cycle averages 21 days.是什么意思？

A cow's estrus cycle averages 21 days.

母牛的发情周期平均为21天.

相关词汇
estrus cycle averages days

estrus

n. 动情期，动情周期，发情；

cycle

n. 循环，周期，自行车，时代，一段时间，整套；vi. 周而复始，循环，骑自行车，轮转；vt. 运转，循环，使轮转；

averages

n. 平均水平( average的名词复数 )，（速度等的）平均率，平均估价；

days

n. 天，时期，一天( day的名词复数 )，白天，时期，工作日；adv. 每天，在白天；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
Eschew fattening foods if you want to lose weight.
你如想减肥,就不要吃致肥的食物.
The ES group and the ESE group animal remarkably is lower than M group.
ES组和ESE组动物显著低于M组.
We need a strong leader to keep our esprit de corps intact.
我们需要一位有能力的领袖,使大家的团队精神得以保持不变.
What else could cause his estrogen level to be that high?
还有什么原因造成他的雌激素水平如此之高?
Briefly speaking , Confucius'esthetics is that of ceremonial rites and music.
孔子的美学概而言之就是礼乐美学.
The art of conversation is highly esteemed in France.
在法国十分尊重谈话技巧.
This was House of Commons gossip, as esoteric as theatre - gossip.
这叫做众议院的流言蜚语, 它同戏剧界的流言蜚语一样是高深莫测的.
Winning is a good thing, but failure sometimes is also estimable.
胜利是可贵的, 而失败有时同样可敬!
Conclusions: Historically, landmark and report measurements in esophagoscopy hae been measured and standardized the upper incisor.
结论: 从上切牙到食道镜检查的界标和所报道的测量方法在以往的研究中已经被测量和标准化.
Therefore , this kind of development view is not continuable in essentiality.
这种发展观在本性上是不可持续的.
The whole school knew every detail of this made escapade.
全校对这场疯狂的恶作剧的全部细节知道得一清二楚.
They eschew number - crunching and regression models in favour of personal issues.
新一代商学院教员避免摆弄数字,也不搞衰退模型,而喜欢研究个性化问题.
Although things are changing the medical establishment is still overwhelmingly male.
虽然世易时移，但医学界依然是男性的天下。
What on earth have you been doing th ese days?
这些天你究竟到哪儿了?