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母牛的发情周期平均为21天.用英语怎么说？

母牛的发情周期平均为21天.

A cow's estrus cycle averages 21 days.

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。
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。
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。
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。
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Purpose To synthesize a new antitumor drug 2 - methoxy estradiol which is an angiogenesis inhibitor.
目的合成抗肿瘤新药新生血管形成抑制剂2甲氧基雌二醇.
I no longer felt any eschatological sense, or even any responsibility.
我已经不再具有末日将临的感觉, 甚至不再意识到责任感.
To Blanch Escargot: Blanching is the first step in preparing escargot dishes.
如何将蜗牛焯水: 这一步是做法式蜗牛的关键步骤.
The possible protective mechanism of estradiol is releasing.
降低体内NO含量是脑保护的可能机制.
It is essential to feel at ease with your therapist.
在治疗师面前放松下来是很重要的。
Some, including an esterase, may be on the outside of intact lysosomus.
包括酯酶的一些, 可以位于完整溶酶体的外表面.
Try to view situations more objectively, especially with regard to work.
要尽量客观地分析情况，尤其是在工作上。
When the estimator is unbiased, the numerical estimate is frequently also called unbiased.
当估计量无偏时, 数字估计值也常叫做无偏的.
That armchair is comfortable but not very esthetic.
那张扶手椅坐起来舒服，但不太美观。
They complained that they had been trapped inside the police station, but in fact most were seen escaping over the adjacent roofs to safety in nearby buildings.
他们抱怨说被困在了警察局里，但实际上，有人看见他们大多数人通过毗邻的屋顶，安全地逃到了附近的建筑物内。
Eschew evil, and do good ( Book of Common Prayer ).
“不做恶事, 做善事” ( 普通祈祷者手册 ).
The site is available in English, Fran & ccedil ; ais , and Espa & ntilde ; ol.
该站点除英语版外, 还有 法语 版 和 西班牙语版.
These are escargot . It's French for snails . It's a delicacy.
这些是“锅牛”,法文的锅牛,很可口.
Second, the esthetics color of revel exhibits its folk essence.
其次手机短信的狂欢化美学色彩也体现了其民间本质.