To assume that an abundant source of renewable energy will address this challenge is to ignore the vital non-fuel uses of petrochemicals.
As you can see, while the population of children is fairly constant, the elderly population is increasing at the fastest rate.
The only way to open the safe was with an 8-digit access code. Whoever got into the safe must have had that code.
In fact, the substitution of AIs for human labor has the potential to transform our world. Experts warn that smart machines may cause widespread unemployment.
The interactions between the prisoners and guards had become hostile [敌对的] and degrading. The guards had become aggressive and brutal, and the prisoners were passive and depressed.
During the 20th century, the average lifespan in the United States increased by more than 30 years, of which 25 years can be attributed to advances in public health.
Unlike ordinary physical clones –which have identical features as their parents, but which are independent organisms, each with a different conscious self your electronic clone would believe itself to be you.
Suddenly he realized that there was a new IT guy in the office. He maintained the company’s computer network and provided technical support for the staff.
Prisoners were to be addressed by their assigned numbers and never by name. To prevent eye contact with the prisoners, guards wore mirrored sunglasses.
Just as adaptability has helped humans survive, it makes it more difficult to control infectious diseases. As conditions change, the organisms which cause these diseases adapt and become stronger.
A high dependency ratio means that there are fewer working people to support health, social security and education services, which are used by the dependent sectors of a population.
They will know what kind of problems we have, our preferences, and any content we want to learn or practice, they will be able to adapt to our needs and be available at any time.
Evolving technology has become an unstoppable force, reshaping our societies, ignoring national borders, and interconnecting economics. There doesn’t seem to be any way to control it.
Violent actions were seldom shown in gruesome detail, but were inferred from the situation.
So the best defense will be to prevent an outbreak from occurring. This may require global cooperation and the sharing of data.
While others, including Nikola Tesla, had explored similar ideas of frequency hopping, Lamarr and Antheil obtained a patent for their invention in 1942 for what would become known as spread-spectrum technology.
Animals, such as birds and pigs,carry viruses that may mutate into a strain that can infect humans. Such a new strain could lead to another pandemic well before a new vaccine could be developed.
If something decomposes [分解], it...decays and falls apart.
A remedy [补救] is something that...corrects or removes a problem.
To reflect the experience means...to serve as an example of it.
To be sane means to be...in a healthy state of mind.
To substitute for something means...to take its place.