We believe there is a need for a text on graph theory which is both elementary and pertinent to today's engineering curriculum . 我们认为需要有一种图论课本，这既是初步的，又要适应于当前的工程课程。
But those fossils and robison's interpretations of them formed the initial groundwork for tracing early human evolution in africa . 但是这些化石以及罗宾逊对它们所作的解释奠定了在非洲追溯早期人类进化的初步基础。
The analysis of lunar rocks and soil samples has led to a number of tentative conclusions about the past history of our satellite . 对月球岩和土壤样品进行分析，可得出有关我们的这颗卫星过去历史的一些初步的结论。
This declaration if embodied in the bill of lading shall be prima facie evidence but shall not be binding or conclusive on the carrier . 该项声明如被载入提单，即作为初步证据，但它对承运人并不具有约束力或最终效力。
Kerogen analyses, however, require preliminary isolation of the kerogen by hydrochloric and hydrofluoric destruction of the inorganic minerals . 但是，油母岩分析需要使用盐酸和氢氟酸破坏无机物以便初步分离出油母岩。
Research and animal experiments were needed over two more years at least, but preliminaries had been successful, the signposts were in place . 继续研究和在动物身上做实验，至少还需要两年，但初步实验是成功的，路标已经找到。
They are therefore introduced only in an elementary way to show their basic principles and for the added insight they give into colour theory . 因此，只是向他们作初步的介绍，说明它们的基本原理，以便有助于他们去进一步探讨彩色理论。
The following definition to thermal properties and introduction to the theory of heat transfer are not intended to give an exhaustive treatise of these subjects . 下面引入的某些热性质定义和传热理论的初步概念都不准备作无止境的论述。
But, although tentative reforms have been started, few developing countries have capital markets which generate or allocate credit efficiently . 但是虽然已经开始执行初步的改革，极少数发展中国家具有招引信贷或有效分配信贷的资本市场。
Although america may give this first impression, the united states, like most other countries, has its rich and poor people, its rich and poor neighbourhoods . 虽然美国可能令人产生这种初步的印象，但它跟大多数的国家一样，有富人也有穷人，有富人聚居的地区，也有穷人聚居的地区。
