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1.sprang to life 突然活跃
例句：The students, who had been tired and lazy all morning, sprang to life when the lunch bell rang.
那些学生一整个上午都是没精打采、洋洋的样子，但午餐铃声一响，顿时个个都变得生龙活虎。
2.last vi.持续;维持
例句：The money has to last for the rest of the month.
这些钱得维持这个月剩下时间的费用。
