Neither long-acting beta agonists nor steroids are designed to halt an acute asthma attack.
The move is designed to halt the drift from television to the internet.
It was designed to halt a blood cancer called chronic myeloid leukaemia (CML), which is characterised by the overproliferation of white, myeloid blood cells.
The drug is designed to halt a disease called wet age-related macular degeneration, which is one of the most common forms of blindness in elderly people.
The air interdiction program, first begun during the Clinton administration in 1995, was designed to halt the shipment of semirefined cocaine from Peru to Colombia, where it was processed and then shipped to the United States.
North Korea's nuclear program, some analysts believe, is designed to halt an American invasion by first striking nearby United States military bases and South Korean ports, then by threatening a missile launch against the American mainland.
Waves may also wash over booms that are designed to halt the spill before it reaches the coast, particularly the Chandeleur Islands, which are part of a national wildlife refuge.
Beijing has repeatedly refused to comment directly on the case but there is widespread suspicion that the men's apparent detentions – in Thailand, southern China and Hong Kong – are designed to halt the publication of salacious tomes about the private lives of top party figures.
The United States and NATO maintain that the reconfigured missile-defense system based in Europe could not diminish the deterrent power of Russia's vast nuclear arsenal, and state that the system of antimissile interceptors and radars is designed to halt missiles from Iran.
The zones are designed to halt commuter parking in Bristol's streets.
