引言部分介绍了目前关于西印度群岛移民的研究现状，对国外的相关研究成果进行了简单地归纳和总结；

The foreword introduces the situation of current research about the West Indian immigrants, summarizes briefly the relevant research of foreign academic communities;

youdao

移动目标的识别是本文的一个难点和重点，目前国外的相关研究中，细胞神经网络大多用在图像的初级处理上，识别过程用其它方法实现，如基于DSP算法。

The recognition of moving object is important and difficult. Now, CNN has been used for image primary processing abroad, and the processing of recognition uses other methods such as DSP algorithm.

youdao

近年来，国外文献开始基于做市商交易制度的市场微观环境对相关问题进行研究。

Some of the foreign literatures start to study it based on financial market microstructure characterized by market maker trading system.

youdao