A fertility rate of around 2.1 is considered the level a population can replace itself.

  • 1左右的生育率被认为是人口可以自我更新的合适水平.
  • 来源:互联网摘选更新时间:2025-01-18 14:39:54

  • 重点词汇
  • 1num. one;
  • leveln. 水平,水准;水平线,水平面;水平仪;[物]电平;
  • replacev.替换;以…取代;更新;把…放回(原处);
  • ofprep. 关于;属于…的;由…制成;
  • itselfpron.(it的反身形式);它自己,它本身;自身,本身;
  • 2 two;
  • fertility raten.人口出生率,生育率;
  • canaux. 能够;可以;有机会;
  • consideredadj.经过仔细考虑的;经过深思熟虑的;受尊敬的;经过深思熟虑的看法;
  • 相关例句
1、

Nugent says statistics on the fertility rate were also revealing.

Nugent说 人口出生率的统计数据也揭示了这一点.

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2、

The fertilization after be being cut every time waters.

每次剪后施肥浇水.

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3、

Different fertilization had significant effects on the contents of DTP in leachate.

不同的施肥条件显著影响渗漏水的DTP含量,NP处理 最高,DTP含量达到了0.047mg·L-1.

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4、

Mammalian spermatozoa go through process of epididymalmaturation to develop their capacity for fertilization.

随着精子在附睾中的转运,它们与卵子质膜的融合能力逐渐增加.

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5、

The main reason is the effect of fertilization rate.

主要原因是施肥量的影响.

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6、

The management and maintenance practices of golf course mainly include irrigation , fertilization , insects and disease control.

高尔夫球场的养护主要包括草坪的水肥管理、病虫害管理等方面.

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7、

The results indicated that soil biomass carbon and nitrogen were remarkably influenced by fertilization.

结果表明:长期不同施肥处理对土壤微生物量碳和氮产生显著影响.

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8、

The characteristics of soil and fertilization of fruit vegetable in solar greenhouse in Beijing were investigated.

本文对京郊日光温室的土壤环境特征、施肥特征以及施肥对土壤环境和黄瓜产量、品质的影响进行了研究.

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9、

the development of in vitro fertilization

体外受精的研究发展

《牛津高阶英汉双解词典》

10、

Fertilization, the process in which the man's sperm joins the egg, takes place in the tube.

受精是男性精子与卵子在输卵管结合的过程.

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11、

Is It'so far removed from in vitro fertilization?

它与人工受精确实差别很大 吗 ?

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12、

Fertilization which was related to fertilization amount and different growth stages improved photosynthetic rate of leaves.

增施肥料提高了叶片光合速率,并且它与施肥水平和生育阶段有关.

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13、

The red band signals a chemical reaction that follows fertilization.

卵上的红带表示卵受精后的化学反应.

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14、

Zona pellucida protein surrounding to oocyte is important in the proc ess of fertilization.

卵透明带蛋白围绕在卵母细胞外,在受精过程中起着重要作用.

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15、

Fertilizer is a substance put on land to fertilize it.

肥料是施在地里使之肥沃的物质.

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16、

Self sustaining gardening has to do with allowing foods to self fertilize.

自我维生菜园与允许植物自我施肥有关.

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17、

Animal an and crop waste can be used to fertilize the pond and feed the fish.

动植物产生的废物可以为池塘施肥和喂鱼.

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18、

A tablespoon of human semen contains enough sperm to fertilize every woman in North America.

一小勺的精液里含有的精子足够让每一个北美的女人都怀上孩子.

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19、

We shoudl fertilize soil if we want to grow healthy plants.

如果我们要使农作物健康成长我们必须为土壤施肥.

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20、

The peasants fertilize the field by using manure.

农民们施肥来使土地肥沃.

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