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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... As the luminosity of the Tevatron increased, with every extra collision that was recorded,... [+] opportunities for new observations and precision measurements opened up, enabling discoveries such as rare decays, tetraquarks, and CP-violation in new systems of particles. ... "
" ... or any other combination that leads to a colorless total. When you hear about exotic particles like tetraquarks (two quarks and two antiquarks) or pentaquarks (four quarks and one antiquark), know that they obey these rules. ... "