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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... Before we understood how the law of gravity worked, we were able to establish than any object in ... [+] orbit around another obeyed Kepler's second law: it traced out equal areas in equal amounts of time, indicating that it must move more slowly when it's farther away and more quickly when it's closer. At all moments, in Newton's gravity, the gravitational force must point towards where the Sun is, not where it was a finite time ago in the past. ... "
" ... Before we understood how the law of gravity worked, we were able to establish than any object in ... [+] orbit around another obeyed Kepler's second law: it traced out equal areas in equal amounts of time, indicating that it must move more slowly when it's farther away and more quickly when it's closer. This effect was clearly visible for the Moon since antiquity, as the smaller angular size and slower speed near apogee and the larger angular size and faster speed near perigee is evident. ... "
" ... We must come together across sectors to demonstrate through our actions that human rights matter, that international laws must be obeyed and that we will no longer accept a world where children die from hunger. We need a new global social contract — or, at least, to more fully live up to the old one. ... "
" ... When you have particle/antiparticle pairs present in empty space, you might think they simply pop into existence, live for a little while, and then re-annihilate and go back into nothingness. In empty space with no external fields, this is true: Heisenberg's energy-time uncertainty principle applies, and so long as all the relevant conservation laws are still obeyed, this is all that happens. ... "