With the acceleration of industrial growth came acute urban crowding and accompanying social stress -- conditions that began to approach disastrous proportions when, in 1888, the first commercially successful electric traction line was developed. 谁能帮忙分析下蓝色字体句子? 红色标记的是词组还是什么没弄清楚 自己分析出来了 那就谁跟帖谁就是最佳答案吧.GIF)
[ 此贴被水蜜桃在2008-03-19 12:39重新编辑 ]
