1.American scientists are attempting to recover genetic material in bone fragments that could be from Amelia Earhart.

attempt to试图，企图

2.The objects might have belonged to the two-person flight team.

belong to属于

例句：Does this house belong to Mr. Winter?
      这幢房子是温特先生的吗?

      Victory belongs to the most persevering.
      胜利属于最有毅力的人。

3.The Food and Drug Administration has not made a decision about whether or not to ban blood from donors with CFS.

ban from禁止

例句：The Zimbabwean Government has introduced new laws to ban thousands of employees from taking part in strikes.
      津巴布韦政府颁布了一条法令，禁止成千上万的雇员参加罢工。

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