需要时

Dung beetle is world's strongest insect: study The world's strongest insect is a type of male dung beetle which needs its power to be able to mate with females in animal faeces, British and Australian scientists said Wednesday.

当我在街上看到简时，她只是装作没看见我。英国和澳大利亚科学家本周三称，全世界力量最大的昆虫是一种雄性屎壳郎，这种屎壳郎需要很大的力量才能在动物粪便中与雌性屎壳郎交配。

Hydraulic dynamometry rotor was casted from brass alloy. Because of the working requirement for driving liquid, the laminas of the rotor are assembled slantways and have a complicated structure .

水力测功器转子是由黄铜合金铸造而成，由于转子工作时驱动液体的需要，叶片均呈倾斜状，结构比较复杂。

For PVC, sayqat-Lu's fen, polyester, nylon, and so on film, because of their larger surface tension of the usual business card printing and membership card product requirements can be direct business card printing and membership card production (the actual requirements of the customers because in recent years, these materials in business card printing and membership card before or after a treatment), and is not handled by the polyolefin film surface tension is very low, such as pE is 31 Dyne, pp 29a Dyne, to business card printing and membership card-making should be increased to 38 Diane 2, this requires surface treatment on the film.

对于聚氯乙烯、赛璐玢、聚酯、尼龙等薄膜，因其表面张力较大，一般在制卡和会员卡制作产品要求不高时可直接制卡和会员卡制作（实际由于近年来客户要求的提高，这些材料在制卡和会员卡制作前也要经过处理），而未处理过的聚烯烃薄膜表面张力很低，如pE为31达因、pp为29达因，为了制卡和会员卡制作应将其提高到38达因2上，这就需要对薄膜进行表面处理。

The method will make a break in the theory of earth-space location; achieve space-space location .

与第一种方法相比，该方法有如下优点：(1)不需要在星载SAR的视场中使用任何位置确知的参考点，因此将真正突破现存的地-空定位理论，达到空-空定位水平；(2)其定位精度将仅仅取决于星历数据的准确性、地球模型的有效性、脉冲时延所决定的目标斜距精度、以及成像中多普勒信息的估计精度。

Using SAP5 and model experimental analysist method, the static and dynamic properties of the close-combine frame of the Edger have been predicated.

该方法包括：运用键图理论和方法，建立系统数学模型将数学模型转化为仿真模型，并进行计算机仿真对仿真计算的数据进行时域和频域两方面的分析根据设计需要，决定是否对系统进行优化设计用此方法预测了立辊轧机主传动系统的动态响应特性。

"We are all becoming heavier and it is a global responsibility," Edwards said in a telephone interview.

爱德华在接受电话采访时表示：人们的体重正在不断增加，这是个需要全球关注的问题。

For the use of eighty and eightieth see the examples at fifty,five and fifth

需要建造更多的房屋时，我们却在生产80马力的汽车。

As it happens, a razor that is safe in Europe is unlikely to electrocute Americans. So, ask businesses on both sides of the Atlantic, why have two lots of tests where one would do?

实际上，在欧洲使用安全的剃须刀不大可能使美国人触电身亡，因此，大西洋两岸的企业都在问，当一套测试可以解决题目时，为什么需要两套呢？

As it happens, a razor that is safe in Europe is unlikely to electrocute Americans.So, ask businesses on both sides of the Atlantic, why have two lots of tests where one would do?

碰巧在欧州使用安全的剃须刀不大可能使美国人触电身亡，因此，大西洋两岸的企业都在问，当一套测试可以解决问题时，为什么需要两套呢？

As it happens, a razor that is safe in Europe is unlikely to electrocute Americans. So, ask businesses on both sides of the Atalantic, why have two lots of tests where one would do?

碰巧在欧洲使用安全的剃须刀不大可能使美国人触电身亡，因此，大西洋两岸的企业都在问，当一套测试可以解决问题时，为什么需要两套呢？

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷