francium

"The radioactive was carefully stored in a lead-lined container at the science lab. "

"the accomplishment of an enterprise, of a prophecy, etc"

"Letters are the elements of written language."

"The science students conducted their experiments in the school laboratory. "

"Scientists study plants to understand how they grow. "

"The weather was extremely hot today; we stayed inside all afternoon. "

"Scientists conduct experiments in laboratories to discover new medicines. "

"The actor spoke his lines artificially, with too much intonation."

"He pursued his studies intensely."

"The research station that houses Wang and his team is outside Lijiang, a city of about 1.2 million people."

"The farmer unstable the horse from the stable before taking it to the field. "

"The scientist studied the chemical composition of the soil sample. "