Corn harvests remain small. The researchers say farming methods in Sub-Saharan Africa need to improve or else poor quality soil will increase rural poverty.

VOA: special.2009.07.28

And the third fact that we need to keep in mind is that spins remain parallel prior to adding a second electron in any of the orbitals.

第三个事实是我们需要记住在,每个轨道加入第二个电子之前,自旋保持平行。

麻省理工公开课 - 化学原理课程节选

Wednesday the palace said his general condition was good, but that the king would need to remain in hospital until a full recovery.

VOA: standard.2009.10.15

"There are some things that when you operate in the 'cloak-and-dagger' world of the intelligence community, that need to remain within the intelligence community,"

VOA: standard.2009.04.20

There have been strong statements from world leaders on the need to forge agreement, even though differences on timing, approach,burden sharing and funding remain.

VOA: standard.2009.12.08