He is paid by the police to spy on other students.

Join a group in order to spy on the members.

加入一个组织来暗中监视其中的成员。

How much did you pay the man to spy on?

你付了这个人多少钱来暗中监视你丈夫？

Why would I want to spy on him for you?

我为什么要为你监视他呢？

I never agreed to spy against the United States.

我从来没有答应去当间谍刺探美国的情报。

You could understand why the police needed to spy.

你也许明白为什么警察要侦察。

The Arctic fox ( Alopex lagopus), or white fox, as it is often called, is a member of the canid family and is related to other foxes, wolves, and dogs.

北极狐，俗称白狐，是犬科家族中的一员，它与狼、狗和其他狐狸有着亲缘关系。

The arctic fox ( Alopex lagopus) is well suited for frigid weather, from its short muzzle and ears to its furry soled paws and thick, bushy tail.

北极狐狸舒服合适严寒的气候，从它的短的鼻口部和耳朵到它的厚的毛皮，多毛的尾巴。

Effect of different concentrations of Orvus ES Paste and egg-yolk on quality of frozen-thawed spermatozoa in the blue fox Alopex lagopus

OEP及卵黄浓度对蓝狐冻融精子质量的影响

Effects of Probiotices on Digestibility and Utilization of Protein in Blue Fox ( Alopex Lagopus) of Different Growing Phase

益生菌制剂对蓝狐不同生长时期蛋白质消化、利用的影响

Effects of Different Sugar on Characteristics of Fresh and Frozen-thawed Blue Fox ( Alopex lagopus) Spermatozoa

不同糖类对蓝狐精子常温及冷冻保存特性的影响

Study on the endocrine cells in the digestive tract of the Arctic fox ( Alopex lagopus) using immunohistochemical methods

蓝狐消化道内分泌细胞的免疫组化研究

Effects of Compound Enzymes on Digestion and Metabolism of Protein in Different Growing Phases of Alopex lagopus

复合酶制剂对蓝狐不同生长期蛋白质消化和代谢的影响

Study on vegetation rebuilding of "black soil type" degraded grassland with Poa pratensis in the riparian areas of rivers

利用草地早熟禾改建江河源区黑土型退化草地的研究

Seasonal Dynamics of Underground Biomass of Poa pratensis var. anceps cv. Qinghai

青海扁茎早熟禾地下生物量季节动态变化

The total capacity of soil and water conservation of Poa pratensis artificial grassland was increased and the soil physical characteristic was improved as well;

草地早熟禾人工草地土壤总体含水能力增强，物理性状改善；

Effects of species and applied fertilizer on Kentucky bluegrass ( Poa pratensis) seed yield and yield components

品种及施肥对草地早熟禾种子产量要素和产量的影响

Study on Anti-salt of Bluegrass Poa Pratensis Varieties in Their Seed Germinating Period

几种草地早熟禾种子萌发期耐盐性的比较研究

The result show that: The lower limit soil moisture for Poa pratensis was 55% FC.

试验结果表明：满足草地早熟禾生长发育和质量要求的草坪土壤适宜含水量为大于55%FC水平。

Resistance Against Brown Patch of Different Poa pratensis Cultivar

草地早熟禾不同品种对褐斑病抗性的差异

Study on the Adaptability of Poa pratensis in Tongde Area of Qinghai Province

草地早熟禾在青海同德地区的适应性研究