But the study says it can be more economical in the long term than using fuels like gasoline, diesel or kerosene.

VOA: special.2010.01.11

But Vice President Joe Biden supports a proposal to narrowly target military efforts at al-Qaida, using unmanned aircraft and special forces.

VOA: special.2009.10.10

But it is still possible to make paper by hand, since the steps are the same as using big machines.

VOA: special.2009.07.06

The satellite images may not show what the farmers are using the trees for, but trees provide nuts,fruit, wood and other products.

VOA: special.2009.09.01

But in nineteen ninety-one, Democrats accused President George H.W.Bush of using the last such speech for political purposes.

VOA: special.2009.09.17

But experts generally advise against using the drug if more than three hours have passed after the first signs of a stroke.

VOA: special.2009.09.22

But beyond what is necessary for these purposes, there will be no invasion, no using of force against or among the people anywhere."

VOA: special.2009.07.30

But the Democrats could try to pass a health care bill using a process called reconciliation.

VOA: special.2010.02.27

Workers are using hand-operated pumps to spray pesticides to kill the caterpillars, but others quickly return.

VOA: special.2009.01.27

But it was not until nineteen ninety-three that the problem was completely solved using corrective mirrors.

VOA: special.2009.09.30

But in the summer of eighteen seventy-three, Homer began using watercolor paint.

VOA: special.2010.07.25

But most found that using e-textbooks did not change their study habits.

VOA: special.2009.09.03

But many of the expressions using water have unpleasant meanings.

VOA: special.2009.05.10

But Woods notes that algae, using Algenol's patented process, produces eight times more energy than the energy used to make it.

VOA: standard.2009.09.02