英语翻译

英语翻译
小弟这段看不大懂啊,求英语达人帮英译中下,跪谢
Techniques for Adapting Crossover
There are two possible techniques for using these extra bits:local and global adaptation.In local
adaptation,the last two bits of each string are used to select which type of crossover is used.For example,suppose two strings chosen for crossover.The last two bits of each string are then examined.If these bits are identical,“00”,then one-point crossover is performed.If the two bits in each string are “11”,uniform crossover is performed.If the last two bits are different,the crossover operator is randomly chosen from the four methods (Chen,1997).
With local adaptation,the choice of crossover operator is determined by a particular string.With global adaptation,the choice of crossover operator is determined by the entire population.