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- In many European countries (the soil of which possesses the same natural fertility as that of England) the yield at present does not exceed fourfold. 有许多欧洲国家，它们土地的肥沃并不亚于英国，但农作物每英亩产量的增加还不到四倍。
- So, in theory, women could choose to preserve a sample of ovarian tissue and then reimplant it after their natural fertility had run out. 所以，从理论上讲，妇女能够选择保存卵巢组织，等到她们自然生育能力丧失以后再回植体内是切实可行的。
- Effect of plant density and fertilizer application on plantain yield in two soils from Colombia with different natural fertility is shown (Table 2). 表2说明了在哥伦比亚的两种不同天然肥力土壤上种植密度及肥料用量对大蕉产量的影响。
- Effect of plant density and fertilizer application on plantain yield in two soils from Colombia with different natural fertility is shown( Table2). 表2说明了在哥伦比亚的两种不同天然肥力土壤上种植密度及肥料用量对大蕉产量的影响。
- Over 300 head of cattle on the farm provide natural fertilizer for the crops. 农场饲养了300多头牛,它们的粪便为作物提供了天然肥料。
- The farmers often supplement natural fertilizer with chemical fertilizer. 农民常用化肥来补充天然肥料。
- The use of natural fertilizer can bring the crops on nicer than the use of chemical fertilizer. 使用天然肥料比使用化肥使庄稼长得更好。
- Fertilizers enhance the natural fertility of the soil or replace the chemical elements taken from the soil by previous crops. 肥料能提高土壤的肥力，或补充土壤中被以前作物吸收的化学元素。
- The annual floods left precious silt on the fields, a miraculous natural fertilizer which made the crops grow luxuriantly. 每年洪水过后，土地上都会留下一层淤泥，这是能让庄稼茁壮成长的天然优良肥料。
- Yang said at first the soil was sticky, but after they began mixing in rice husks and other natural fertilizers, they began to see some positive results. 农友杨殷琴：刚开始来的时候非常的黏，我们拌一下稻壳，然后到现在就有发现不一样。
- Primary Study on The Natural Fertility of Maize Haploid 玉米单倍体育性自然恢复的初步研究
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- These were, at first, only those in which nature fertilized the soil after each harvest. 这首先是在那样一些地区，即自然能使其土壤在每次收割之后保持肥沃。
- These were,at first,only those in which nature fertilized the soil after each harvest. 首先，是在那样一些地区，即自然能使其土壤在每次收割之后保持肥沃。
- Our motherland flows with natural resources. 我们祖国蕴藏着丰富的天然资源。
- Events took their natural course. 事态依自然进程发展。
- She has a natural wave in her hair. 她的头发自然卷曲。
- Magnetism is a natural phenomenon. 磁力是一种自然现象。
