They arrived at the Haigang Bridge before it was dark at last.
他们终于在天黑之前到达海港大桥。
Address: West part of Hebei Street, Haigang District, Qinhuangdao, Hebei.
地址：河北省秦皇岛市海港区河北大街西段。
The forth part, the traits and reasons of teacher flow in Haigang district Qinhuangdao city junior schools.
第四部分，秦皇岛市海港区普通中学在职教师流动的特点与归因分析。
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