Decreases in barometric pressure two to three days before the visit also appeared to trigger headaches, but to a lesser extent.

VOA: special.2009.03.18

Chemical sprays like air fresheners, hair spray,cleaning products and even strong beauty aids can trigger an asthma attack.

VOA: special.2010.09.07

When you press the toy guns trigger, the western man kicks the Chinese man in the back.

VOA: special.2010.03.03

Doctors have identified many of the things that may start,or trigger, an asthma attack.

VOA: special.2009.07.28

Stress can act as a trigger. So can chocolate in some people.

VOA: special.2009.03.18

Its name is Trigger. Trigger is really a very ugly guitar.

VOA: special.2010.05.12

During the winter, breathing in cold air can trigger asthma symptoms.

VOA: special.2009.07.28

My finger is a-shaking on this here trigger."

VOA: special.2009.11.14

Air pollution can also trigger asthma.

VOA: special.2009.07.28

"I firmly believe it is in Iran's interest not to develop nuclear weapons, because it would trigger a nuclear arms race in the Middle East and be profoundly destabilizing in all sorts of ways."

VOA: special.2009.05.23

Israeli Prime Minister Benjamin Netanyahu has warned that any such action will trigger unilateral steps from the Israeli side.

VOA: standard.2009.11.18

You have your handgun out. It's you and the target and your trigger finger and that's all there is."

VOA: standard.2010.04.19

Their guns are equipped with a special device that emits laser beams each time a Marine pulls a trigger.

VOA: standard.2010.04.06

Art Cashin,the floor director at UBS Financial Services, says many investors worry that the uncertainty in Europe could trigger another global meltdown.

VOA: standard.2010.05.21

Already fires have begun in parts of Indonesia, where there are warnings that an extended dry season this year could trigger severe blazes.

VOA: standard.2009.06.24

Some warn the measures could trigger a trade war. Others say they represent more normal trade relations.

VOA: standard.2009.11.10

But heavy rainfall could also trigger massive flooding, lost livestock, and displacement, bringing more misery to millions.

VOA: standard.2009.10.06

"And that short,few-hour exposure is able to trigger a heart attack where they might not have had it for days or months,or never."

VOA: standard.2010.08.04

He said that would trigger a cascade of events in which Honduras would find itself thrown out of many components of the inter-American system.

VOA: standard.2009.07.01

Kerry warned that a quick U.S.pullout from Afghanistan could trigger a civil war.

VOA: standard.2009.10.26

"With reform, we will make our financial system more transparent by bringing the kinds of complex backroom deals that helped trigger this crisis into the light of day."

VOA: standard.2010.05.15

"The Sharpeville and Langa massacres were a tipping point in that they served to trigger off deep revulsion and disgust, both locally and internationally, against the apartheid government."

VOA: standard.2010.03.21

Because we cannot think what a default of Greece will trigger.

VOA: standard.2010.02.26

That could trigger more sanctions against the impoverished state.

VOA: standard.2009.03.12

"When you have a situation like this occur, you are bound to have a situation down the line where there could be a shortage in food, which can also trigger other negative situations, such as malnutrition, for example, or insufficient food for cattle, which is also another important economic sector in West Africa,".

VOA: standard.2009.09.08

"When there are people that we know who have been involved with Noordin (Top), or have been involved in violence, who have served their sentences and who are about to get released, and who have been visited regularly by fellow prisoners who have been released, you would think it would trigger something that these people are high risks, so there should be a way of designating some kind of special category for more intensive monitoring."

VOA: standard.2010.03.24