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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... For his next survey, Mayor and Didier Queloz, Mayor’s postdoctoral student at the time, selected 142 stars cataloged from Mayor and Duquennoy’s previous survey. They focused on stars that were known to be nonbinary and nonvariable. ... "
" ... Once we have determined our gross potential income, next we must determine our expenses. Expenses include all reasonable and nonvariable annual costs, such as: ... "