Egypt,for the most part, has kept its border with the Palestinian territory closed since Hamas militants came to power in 2007.

VOA: standard.2010.06.01

They worked with the same people in this group and kept the vigorous discussion going.

在这群人中他们总是和同样的人一起工作,总是在进行热烈的讨论。

麻省理工公开课 - 固态化学导论课程节选

There's no known cure for hepatitis B, although the virus can be kept in check with anti-viral medicines.

VOA: standard.2010.07.26

"We also feel that former child soldiers should be given assistance and be quickly reunited with their families rather than kept in detention."

VOA: standard.2009.09.16