A U.S.Embassy spokesman in Addis Ababa said there is currently no extradition treaty between the United States and Ethiopia.

VOA: standard.2009.12.23

These are examples of Biomedical Engineering of the future that expand on what we currently use, which involves to no small extent, technology like this.

这些将会是,生物工程领域未来的发展,它根植于现有技术,包括了很多像这样广泛使用的技术

耶鲁公开课 - 生物医学工程探索课程节选

Hershkowitz says,ideally, the Gulf cleanup's oily trash should be disposed of in an energy-producing furnace, but there are currently no facilities large enough to handle the volume of waste being generated by the cleanup efforts.

VOA: standard.2010.08.05

Currently,there is no treaty to control the spread of space debris.

VOA: special.2009.04.01

Slim is currently performing on his "No Paid Holidays" tour across the U.S.,Canada and Europe.

VOA: standard.2010.08.04

But Paul Woods says that idea is limited by the batteries used to store energy and that there is no battery currently available that can power long-haul trucks or heavy machinery.

VOA: standard.2009.09.02