The letter was written by Darwin to thank an American geologist, Dr. Ferdinand Vandeveer Hayden, for sending him copies of his research into the geology of the region that would become Yellowstone National Park.

Thats Glenn Plumb, a chief scientist with Yellowstone National Park.

这位是格伦普莱伯，黄石国家公园的首席科学家。

The largest United States population is in Yellowstone National Park.

美国的黄石国家公园是该国最大的灰熊栖息地。

Breeding programs at Yellowstone National Park and elsewhere have proved successful.

黄石国家公园和其他地方的灰狼饲养计划取得了成功。

The link to U2 has been made explicit on "Viva la Vida," which was co-produced by Brian Eno, the man who moved U2 from a feisty, soccer-chant style into the expansive and hypnotic sound that has defined the rest of their career.

布赖恩伊诺（Bryan Eno）监制的《Viva la vida》已经展示了专辑与U2的关系，因为布莱恩曾经把U2原来活跃的足球音乐风格改造成深邃的催眠音乐风格，而后者则造就了他们以后的职业生涯。

The title track of "Viva la Vida"-also known as the "iPod song," because it is used in an Apple ad-is easily the best thing about the album.

《Viva la Vida》的同名歌曲也叫“iPod歌”，因为苹果公司用来做了广告。它无疑是该专辑的亮点。

IPv 4 addresses are organized into five different classes, as shown in Table 1-7 .

IPv4位址被编入五个不同的类别, 如表 1-7 所示.

Currently, IPv 4 uses 32-bit addresses, which are represented as 4 bytes with dots between them.

目前, IPv4采用32位地址, 这些地址有4个字节,中间用点来分开.

Scroll to IPv 4 and press Select.

滚动到ipv4和按下选择.

A New Model of Secure G a tew a y

一种新型的安全网关模型的设计

A G a me Model of Port Competition

港口竞争对策模型的研究

Let M be a commutative Monoid, G a commutative group and D a M graded field.

设M是交换Monoid，G是交换群，D是M分次域。

Colleges' Risk of Rais in g a Loan and the Control

高等学校举债风险及其控制

On National Culture and Grade of Runn in g A School

论民族文化与办学品位

Ecological industry includes ecological agriculture in a common sense and general ecological industry.

生态产业包括一般意义上生态农业和广义的生态产业.

Moreover Marx also proposed preliminary idea using science and technology to construct ecological agriculture.

另外马克思还提出了利用科学技术建设生态农业的初步设想.

The construction of Ecological Agriculture is a complicated systematic engineering. It could not realize independently.

生态农业建设是复杂的系统工程, 不是能够孤立地实现的.

Developing green-food is an effective way to realize regional sustainable development and develop ecological agriculture.

发展绿色食品是实现区域可持续发展和发展生态农业的一条有效途径.

These questions are becoming the barrier which the limit ecological agriculture further develops.

这些问题正成为限制生态农业进一步发展的障碍.

Promoting the construction of ecological agriculture?

加强生态农业建设.

Ecological agriculture is a vast and complex engineering project.

生态农业是个庞大复杂的工程.