The basis of the paradox lies in the idea that there are hundreds of billions of stars in the Milky Way, and with so many there must be other intelligent life on one of them. But we don't really have a way to assess whether that is true. In six tons of sand, there are hundreds...
There are a few managers who are lucky enough to have the service of that rare kind of secretary who can take care of all sorts of letter writing with no more than a quick note to work from. But for most of us, if there is any writing to be done, we have to do it ourselves. ...
Other scientists have found that when a drone is hovering near, a bear’s heart rate can increase from 41 beats per minute to 162 beats per minute — a high enough rate to cause a heart attack.(相反,科学家们感到不安的是,这两只熊被拍摄它们的无人机吓得做出了危险的、不必要的攀登。爱达荷...
Taking the GRE test is an important decision that can greatly impact your future. Understandably, you may have many questions about the exam, so we’ve put together this complete guide to answer them all. Let’s dive right in! Table of Contents ...
We compare complexity rankings across corpora and show that a language that tends to be more complex than another language in one corpus also tends to be more complex in another corpus. In addition, we show that speaker population size predicts entropy. We argue that both results constitute ...
Human speech contains more than 2,000 different sounds, from the common “m”and “a” to the rare clicks of some southern African languages. But why are certain sounds more common than others? A ground-breaking, five...
There are a few managers who are lucky enough to have the service of that rare kind of secretary who can take care of all sorts of letter writing with no more than a quick note to work from. But for most of us, if there is any writing to be done, we have to do it ourselves. ...
A game of catch is not difficult at all. The two people throw a ball back and forth(来回地掷球). It seems a little boring. The two people are close enough to talk, but too far to touch(触碰). In fact, playing catch is part of baseball practice. It's a popular game. Because ...
It was not until the figure was quite close, within the range of the yellow light from the porch, that they saw dearly what had come. The man was a stranger, and it is rare that a stranger enters the town on foot at that hour. Besides, the man was a hunchback. He was scarcely ...
particularly with saturated blue and green hues. Saturated blue and green plumage hues are relatively rare in birds because they require the production of narrow reflectance peaks that stimulate only the small or medium wavelength cones, which have very closely-spaced spectral sensitivies4,7. However...