例句與造句

1. One method, first described by Keith Reimer in 1986, involves subjecting the affected tissue to brief, non-lethal periods of ischemia ( 3 5 minutes ) before the major ischemic insult.
2. But coming after the staggering increases in crimes through the late 1980s-- a lethal period that culminated in mid-1990 with a string of senseless killings and the tabloid headline plea to Mayor David Dinkins to " Do Something, Dave "-- the latest figures show a surprising reversal.
3. It's difficult to find lethal period in a sentence. 用lethal period造句挺難的