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The new mathematics curriculum yells mathematics teachers change traditional teachers" roles to nowadays teachers" roles. By analyzing the abuse of the traditional teachers roles and the requests about mathematics teachers which the new mathematics curriculum puts forward, we discover that from the lay of curriculum , mathematics teachers should actualize three facets changes as follows:from the single initiators of mathematics knowledge to the promoters of mathematics diathesis;(2)from the loyal executors of mathematics textbook to the devisers of mathematics instruction;(3)from the indoctrinators of mathematics knowledge to the organizers, guiders and participators of mathematics activity .

数学新课程呼唤数学教师由传统的教师角色向现代教师角色转变，通过分析传统数学教师角色的弊端及新课程对数学教师提出的要求，发现从课堂层面讲，数学教师角色主要要实现以下3方面的转变：(1)由单一的数学知识传授者向数学素质的促进者转变；(2)由教科书的忠实执行者向数学教学的设计者转变；(3)由数学知识的灌输者向数学活动的组织者、引导者和合作者转变。

This problem is that research rolling over and falling objects protective structure of bulldozer by learning research condition of rops / fops and relative lay down international standard .

本课题主要通过了解国内外有关对rops fops的研究情况和有关国际标准的制定，对大型推土机倾翻和落物保护装置进行研究，在理论分析的基础上，通过建立rops fops的力学分析模型，推导弹性、弹塑性阶段rops fops变形的计算公式，建立一套可行的rops fops的非线性有限元分析计算方法。

Photographs lay abandoned by Iraqi soldiers on the ground near a bridge over the river Diyala.

2003年4月7日。伊拉克士兵遗落的照片在迪亚拉河的的桥面上。

This I understood to be no more than the Sets of the Tide, as going out, or coming in; but I afterwards understood, it was occasion'd by the great Draft and Reflux of the mighty River Oroonooko; in the Mouth, or the Gulph of which River, as I found afterwards, our Island lay; and this Land which I perceiv'd to the W.

起初我还以为这不过是潮水的关系，有时往外流，有时往里流。后来我才弄明白，那是由于那条叫作奥里诺科河的大河倾泻入海，形成回流之故。而我们的岛，刚好是在该河的一处入海口上。

One fellow as he went by actually clapping his hand upon the sunny face of the rock on which we lay.

有一个家伙走过我们的旁边，用手在我们躺着的那块岩石的向阳面摸了一下。

He lay at his ease in a rough chariot drawn and propelled by his men, and instead of a right hand he had the iron hook with which ever and anon he encouraged them to increase their pace.

他赤裸着两条强壮的胳臂，两枚八比索的西班牙金币挂在耳朵上作饰物；在加奥时，他曾在典狱长的脊背上，用血字刻上了他自己的名字。

He lay at his ease in a rough chariot drawn and propelled by his men, and instead of a right hand he had the iron hook with which ever and anon he encouraged them to increase their pace.

他没有右手，用一只铁钩代替。他不时挥动着那只铁钩，催手下的人赶快拉。

For hundreds of millions of years, turtles have struggled out of the sea to lay their eggs on sandy beaches, long before there were nature documentaries to celebrate them, or GPS satellites and marine biologists to track them, or volunteers to hand-carry the hatchlings down to the water's edge lest they become disoriented by headlights and crawl towards a motel parking lot instead.

在数亿年前的时间里，海龟一直在挣扎着离开大海道海滩上产卵，时间远远遭遇自然纪录片的赞扬，或全球定位通讯卫星和海洋生物学家的追踪，又或者志愿者们用手把幼龟放在海边以避免它们受到光线的影响迷失方向，爬向汽车旅馆的停车场。

For hundreds of millions of years, turtles have struggled out of the sea to lay their eggs on sandy beaches, long before there were nature documentaries to celebrate them, or GPS satellites and marine biologists to track them, or volunteers to hand-carry the hatchlings down to the water's edge lest they become disoriented by headlights and crawl towards a motel parking lot instead.

早在人类有自然纪录片称颂海龟、GPS卫星和海洋生物学家对其进行追踪或者志愿者用手将幼龟捧到海边以免他们因为桅灯迷失方向而爬向汽车旅馆的停车场之前的数亿年，海龟一直是艰难地爬出海面到沙滩上产卵的。

He had learned by hard experience not to carelessly lay hands on something of the doctors without asking.

他是费了很大的劲儿才学会了这样的经验，不经允许不能随便去碰医生的东西。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了