Research progress is introduced at first in this paper.
本文首先介绍了课题研究进展情况。
It was first introduced to the world at large by an American historian in 1911.
它于1911年首先被美国历史学家详尽地介绍给全世界。
The first cordless rechargeable electric toothbrush was introduced by General Electric at the same time.
与此同时，通用电气公司推出了第一个可充电的电动牙刷。
At first, the basic knowledge of DEM and its application in the hydrology were introduced.
首先介绍了数字高程模型的基本知识，及其在水文中应用。
It was love at first sight for me when Iwas introduced to you.
当我被先容给你的时辰，我对于你一见钟情。
At first, the author introduced us the basic theory on convertible bonds.
本文首先介绍了关于可转换债券的理论基础。
At first, the basic conception was introduced.
首先，介绍了体渲染的基本思想。
For the first time they introduced champagne at dinner.
他们吃晚饭的时候，第一次喝起香槟酒来了。
At first, The network's character, application environment and research hot topics are introduced.
首先介绍了网络特点、应用环境和研究热点问题。
The research progress about PA techniques was introduced at the first of the thesis.
本文首先介绍了光声技术的研究进程。
This paper has introduced the theoretical foundation that the city manages at first.
论文首先介绍了经营城市的理论基础。
This paper has introduced the theoretical foundation that the city manages at first.
论文首先介绍了经营城市的理论基础。
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