Caution! The site can't guarantee, that text has age permission. The site is not recommended, if you are less than 18 years old.
The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... That hasn't led to a crisis in nuclear preparedness because plutonium-239 has a radioactive half-life of 24,000 years, so pits from retiring warheads can be repurposed to extend the lives of weapons still in the arsenal. NNSA does a lot of life-extension work on aging warheads, since the last major warhead development effort was completed a quarter-century ago. In the case of tritium, though, which puts the "thermo" in thermonuclear, a steady supply is needed because its half-life is only 12 years. ... "