And if a predator can move on to another species that is easier to find when a prey species becomes rare, the switch allows the original prey to recover.

He had the rare balance of fun and compassion.

It is never rare to find that Mozart packs japanese concert halls, as japanese painter Hiroshige does Paris galleries, unique works of this kind are different from today's popular art, even if they began as works of popular art.

Something rare is worth a large amount of money.

Taxis on a rainy New York night are rarer than sunshine.

They are keen to see rare birds at the destination.

While they are rare north of 88°, there is evidence that they range all the way across the Arctic, and as far south as James Bay in Canada.

While it may sound like an advantage to many, people with this rare condition often find their unusual ability burdensome.

It constitutes a rare object of envy.

My mother, who is just shy of five feet tall, is normally incredibly soft-spoken, but on the rare occasion when she got angry, she was terrifying.

Beyond my career, my facility with languages has given me a few rare opportunities.

Some scientistsmaintain that the changes we are seeing fall within the range of random (无规律的) variation—some years are cold, others warm, and we have just had an unremarkable string of warm yearsrecently—but that is becoming an increasingly rare interpretation in the face of continued and increasing warm conditions.

Physical books will surely become much rarer in the marketplace.

It's so rare that we get an opportunity to affect so much change on one life, White wrote.

And then there are we rare folks who fit both those descriptions.

Beyond my career, my facility with languages has given me a few rare opportunities.

But global warming has raised the possibility that domestic produce could be seriously affected by rare weather events more often.

But in the rare chance that there is a micro-organism that can make you sick on the exact spot where the food dropped, you can be fairly sure that the bug is on the food you are about to put in your mouth.

My mother, who is just shy of five feet tall, is normally incredibly soft-spoken, but on the rare occasion when she got angry, she was terrifying.

Obama is but a rare example of black's excellence

Affordable housing is rare in this city.

It's a rare chance for them to see the boss lose face.

Few babies survive this rare condition, and those who do must endure numerous operations and are likely to have complex needs.

In the seed world, that makes them rare, because most seeds from flowering plants are quite robust.

It's a rare thing for anybody to be able to change who they really are.

Psychologists call them \masters of deception\, those rare individuals with a natural ability to tell, with complete confidence, when someone is telling a lie.

She is hard at work finding a way to take traits from rare wild plants that adapt to extreme dry weather and use them in food crops.

In a rare unanimous ruling, the US Supreme Court has overturned the corruption conviction of a former Virginia governor, Robert McDonnell.

Rare is the household in which the division of labor is so clinically and methodically laid out.