Three species of tilapia thrive there part-time.
在某些时间段，有三种罗非鱼在那里生长。
The other three species differ in the proportion of lower leaves and higher stems that they eat: zebras eat the most stem matter, wildebeests eat the most leaves, and topi are intermediate.
其他三种动物的区别在于它们食用的低处枝叶和高处茎杆的比例不同：斑马吃茎杆最多，角马吃叶子最多，而转角牛羚则介于两者之间。
All of the three species of bacteria have a strongly corrosive property.
这三种细菌对钢都具有很强的腐蚀能力。
In addition, three species (including a frog and a beetle) have been named after him.
此外，还有3个物种(包括青蛙和甲虫)已经以他的名字命名。
About 35 species: tropical Africa, Asia, and Australasia; three species in China.
大约35种：热带的非洲，亚洲和澳大拉西亚；在中国的3种。
To this end, Ceres is tinkering with three species of grass: Miscanthus, switchgrass and sorghum.
为此，Ceres正在对芒草、柳枝稷和高粱等三个物种进行修饰。
In this paper, a class of predator-prey systems of three species with discrete time is studied.
本文研究了一类三种群离散型捕食者食饵系统。
The correlation of oil - oil indicated that the oil can be devided into three species at least ;
油源对比表明有三套烃源岩，即寒武奥陶系、石炭二叠系和侏罗系生油岩。
The impurity was observed at exposure multiples with no unanticipated findings in the three species.
最后一句话我觉得是：在反复曝露的情况下，在三个物种中，该杂质均未观察到预期的结果。
Three species of Marine corrosive bacteria were isolated from the steel pillings of Qingdao Harbour.
从青岛港钢板桩的锈层中分离到三种腐蚀性细菌。
Also known as mountain danta, this animal is the smallest of the three species of tapir that exist in America.
它是美洲三种貘类当中体型最小的。
A food chain model of three species with impulsive perturbations and mixed functional response is proposed and studied.
提出并研究了一类具有脉冲干扰和混合功能反应的三种群捕食链模型。
In the present paper three species of the family Laterotrematidae are recorded, two new species of which are described.
本文记载三种侧孔科吸虫，对其中的二新种进行了详细描述。
Authors studied and compared with the pharmacologic effect of three species of Ferula on the gastroenteric tract of rats.
本文以胃肠作用为指标，比较新疆三种阿魏的药理作用，探讨乌恰阿魏、多伞阿魏代替新疆阿魏应用的可能性。
Objective To analyze the zymogram of peroxidase (per) and phosphoglucose isomerase (PGI) of three species of Sarcocystis.
目的比较几种肉孢子虫过氧化物酶、磷酸葡萄糖异构酶同工酶酶谱。
We are experiencing the greatest wave of extinctions since the disappearance of the dinosaurs: Every hour, three species disappear.11
我们正面临着自恐龙灭绝以来最大的物种消亡：每1个小时，有3个物种从地球上消失。
When given to dogs, rats and humans, it decreased alertness in all three species, while shortening the time it took for them to fall asleep.
当狗、鼠和人服用了这种药物后，他们的警觉性均下降，入睡时间缩短。
The two green and pink morphs were confirmed as distinct species, but King's group found the pink morph can be further subdivided into three species.
这两个绿色和粉红色变种被证实为不同物种，但金的研究小组发现了粉红色变种还可以进一步细分为3个物种。
The stability of a three species food chain system is discussed, in which the growth of producer is subject to the linear initial regrowth model.
讨论了生产者服从草再生模型的三种群食物链系统平衡点的稳定性问题。
The viscera of three species of freshwater fish, grass carp, bream and silver carp, were used as raw material for fish oil extraction in this study.
以草鱼、鳊、鲢三种高产的淡水鱼内脏的提取油脂原料，着重研究内脏油脂的提取工艺条件。
The oligonucleotide probe LZF-I, which is synthesized by us, can form thehybrid molecules with the simple repetitive DNA of three species of fishes.
我们自己制备的LZF—I探针，能与鱼类基因组DNA中的简单重复序列杂交形成杂交分子。
There are no significant differences among the three species, and their female flowers are all provided with a perianth of one to three small scales.
三者之间无显著差异，并且它们的雌花都具有由一至三枚小鳞片组成的花被。
We chose three species of nursery stocks. In pot experments under manual soil water content, study on their adaptability and water consumption properties.
选用君迁子、臭椿、白榆三个树种苗木，在盆栽条件下，控制三种土壤含水量，研究其适应性和耗水特性。
From the viewpoint of vision circumstance and aesthetics, clear painting property for three species of Eucalyptus plantation wood has been researched completely.
从视觉环境和美学特性的角度出发，深入研究了三种桉树木材的透明涂饰性能。
As they reveal in Naturwissenschaften, Dr Beare and his colleagues found that populations of all age groups of all three species declined steadily between 1928 and 1939.
贝尔博士和同事在《自然科学》杂志上透露了他们的发现：1928年至1939年间，三种鱼在每个年龄段的数目均平稳下滑。
The lipid and fatty acid composition of muscle of three species of cultured freshwater fish, silver carp, blunt snout bream, large mouth black bass, was examined in this paper.
测定了鲢、大口黑鲈和团头鲂三种养殖淡水鱼肌肉脂质的含量、分布、成分及脂肪酸组成，调查了鲢肌肉脂质含量与体重的关系。
As the evolution into three species would have taken extreme lengths of time, combined with the lack of fossil records in Africa, the team concludes that Asia was the most likely origin.
由于要进化成三个不同的物种需要特别漫长的时间，结合在非洲没有发现有关化石的记录，考古队得出结论，亚洲是该物种最有可能的起源地。
This suggests that the three species are all such good materials for solid wood products that they are suitable for manufacturing high value–added products, such as furniture and decorative materials.
表明西南桦和红椎人工林木材与柞木一样，是一种优良的实木制品用材，适用于制造高档家具与装饰用材等高附加值产品。
The following three species periodic predator-prey system is considered, the sufficient condition for the existence of a globally and asymptotically stable periodic solution of the system is obtained.
本文研究了一类三种群周期食饵系统，并给出了其存在平稳振荡的充分条件。
The following three species periodic predator-prey system is considered, the sufficient condition for the existence of a globally and asymptotically stable periodic solution of the system is obtained.
本文研究了一类三种群周期食饵系统，并给出了其存在平稳振荡的充分条件。
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