It is still true that a dog is the most useful animal in the world.
狗是世界上最有用的动物，这一点仍然是正确的。
马是一种有用的动物。
Thee horse is a useful animal.
马是一种有效的动物。
The horse is a useful animal .
马是一种有效的动物。
奶牛是有用的动物。
The earthworm is a useful animal.
蚯蚓是一种有用的动物。
马是一种有用的动物。
狗是一种有用的动物。
骆驼是有用的动物。
Monkey is a kind of useful animal.
猴子是一种有用的动物。
奶牛是很有用的动物。
A sheep is a useful animal, whose wool has many USES.
羊是一种有用的动物，它的毛有许多用途。
The earthworm is a useful animal. On the ground it is food for other animals. Under the ground, it makes rich soil for fields and gardens.
蚯蚓是一种有益的动物。在地面上它是其他动物的食物。在地下，它为田野和花园制造肥沃的土壤。
Objective to study the method to establish the model of otitis media with effusion (OME) and offer a useful animal model in the experimental study.
目的研究建立分泌性中耳炎小鼠动物模型的方法，为分泌性中耳炎的动物实验研究提供一种有用的动物模型。
Domesticated Balkan donkeys used to be very popular inrural Serbia, but modern hauling machinery made the people turn their back on this once useful animal.
在过去，家养的巴尔干半岛驴在塞尔维亚乡村曾非常受欢迎，但随着现代搬运机器的产生使得人们渐渐冷落了这种有用的动物。 。
Conclusion the congestive heart failure model induced by rapid ventricular pacing has the advantage of controllability and is a useful animal model for clinical research of heart failure.
结论快速起搏致充血性心力衰竭犬模型在病程上具有可控性的优点，是一种较为理想的研究充血性心力衰竭的实验模型。
In addition to butanol, the bacteria can produce various useful fatty acids that existing processes derive from plant and animal oils.
除了丁醇，它还可以生产从植物和动物油脂出发的多种有用的脂肪酸。
In either case, its legs must have become less useful as the animal evolved over time.
不管是那种情况，它的腿在长期的进化过程中渐渐的没有用了。
In most respects, smoke exposure worsened the host response to influenza. This animal model may be useful in studying how smoke worsens respiratory viral infections.
在更多的方面，被动吸烟恶化了宿主对流感的反应。本动物模型在研究吸烟如何恶化呼吸道病毒感染方面可能是有用的。
Useful drugs are made from inorganic substances or are plant and animal by-product.
有用的药物是由无机物质制成的，或者是植物和动物的副产品。
Animal models of these diseases are proving useful to understand how dysfunction of affected genes and proteins contributes to disease pathology.
这些疾病的动物模型，有助于理解如何受影响的基因和蛋白质功能障碍疾病的病理。
Conclusion Electron microscopy is a reliable and useful technique and can be successfully used in animal virus detection.
结论应用电镜技术是一种检测动物病毒可靠有效的方法。
Animal waste is the best food for the soil; but chemical fertilizers are also very useful.
动物粪便是土壤的最好养料，当然化肥也非常有用。
In addition, the knockout mice might be useful as a model to study mania, as there is no other animal model available yet.
另外，该基因敲除小鼠可以作为研究躁狂症的模型。现在还没有可用于躁狂症的动物模型。
A superbly useful talent for a rogue is ranger, which allows you to call an animal to join your party.
为一个流氓阿寄望有用的人才是护林员，它允许您调用动物加入您的党。
Chemical reactor model is very useful to characterize the animal gut quantitatively and help us to interpret the digestive strategies of animals.
利用化学反应器模型及理论可以定量地描述动物的消化过程，阐述动物采取的消化对策和分析食物的消化动力等。
Chemical reactor model is very useful to characterize the animal gut quantitatively and help us to interpret the digestive strategies of animals.
利用化学反应器模型及理论可以定量地描述动物的消化过程，阐述动物采取的消化对策和分析食物的消化动力等。
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