So as a practical joke , they purchased a half dozen rabbits from an agricultural research center in Haidian District , along with a dozen heads of lettuce .
为了搞恶作剧，他们从海淀区的一家农业研究所购买了六只兔子和十几颗圆白菜。
An Analysis on the Distribution of Arrival Time of Floating Population : A Case Study of Haidian District , Beijing
流动人口流入时间分析：以北京市海淀区为例
The Key Factors of the Haidian Digital Park \'s Success
海淀数字园区建设的成功要素分析
We cordially welcome all the foreign investment enterprises in Haidian Estate of Zhongguancun Science Park to join the Association .
