| 例句 |
backupnoun a crowded mass (as of cars) that impedes or blocks movementthere was the inevitable backup of travelers trying to pass through airport security bottleneck, jam, jam-up, logjam, snarl, tailback(British), tie-up tanglegridlock, lockcongestion, trafficcrawl, delay, slowdown, stoppage a person or thing that takes the place of anotheryou didn't get the lead position, but you can be the backup to the chosen singer cover, designated hitter, fill-in, locum tenens, pinch hitter, relief, replacement, reserve, stand-in, sub, substitute alternate, understudyapology, makeshift, stopgapagent, assignee, attorney, commissary, delegate, deputy, envoy, factor, procurator, proxy, rep, representative, surrogateassistant, reliever, secondsuccessor, superseder in 1801 |