4周搞定2000+托福核心词
impulsive = im(向内) + puls(推动) + ive(...的) = 向内推动的→冲动的
impulse = im(向内) + pulse(推动) = 内在的推动→冲动
appetite = ad(去，往) + pet(寻求) + ite(人或物) = 去寻求美食→食欲
petition = pet(寻求) + ition(表名词) = 追寻状态→请愿
census = cens(判断) + us(表名词) = 查[人口]→普查
cumulus = cumul(堆积) + us(表名词) = 积云
内在的追求→冲动→促进
impetus
常考释义
Because of the barrier of ice to the east, the Pacific Ocean to the west, and populated areas to the north, there may have been a greater impetus for people to move in a southerly direction.
由于东部是冰障，西部是太平洋，北部是移民区，所以有一股强大的力量促使人们往南方迁移。
来源于：阅读OFFICIAL9 P1n. 动量
n. 推动（力）；促进；激励；刺激
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