The bird may fight off some viruses, ones with certain mutations.
Things are copied, then their copies are winnowed to select ones with certain qualities, and the survivors are copied again.
Scented detergents, or ones with certain chemicals, may cause rashes.
"Given the wide differences of view, he is the only one with certain knowledge," Mr. Lane said.
He believed the bill should be a sweeping one with certain safeguards, and he was determined that it should be carried by a Conservative government.
Keen to prove that he was not a representative of the government, he wrote that he was just an ordinary Libyan student, albeit one with certain privileges, such as being chauffeured around Vienna in a car with diplomatic plates, and living in a house with a swimming pool and sauna.
Ofelia spends much of her time in a dream world where she must complete a series of tasks set by a large faun-like creature; a dream world that is highly informed by the real one, with certain items, such as a key, having great importance in both realms.
The fact is that when you get caught in the middle of these things, in these places there's an indescribable merit somehow to feeling involved, to be making a record for history, it is satisfying a certain natural curiosity – one with certain useful impulses and certain dark impulses, as well.
George Weidenfeld, like Prince Rupert Lowenstein, financial adviser to the Rolling Stones, is an experienced broker, dealing, on the one hand, with certain useful remnants of traditional authority (authority with the power to inhibit) and, on the other, with the custodians of contemporary power.
If one rushes with certain high principles, it certainly won't lead to stability".
Sometimes the actors speak directly to the audience, telling their stories and making their cases; sometimes they address one another, with certain phrases repeating like refrains in a song.
