1.era n.纪元,年代(period in history starting from a particular time or event);时代(period)
例:For the first time in the modern era, non-Hispanic Whites are officially a minority in California.
2.eradicate v.根除,消灭(to exterminate)
词根记忆:e(出)+radic(根)+ate--连根拔出--根除
例:The anopheles mosquito(疟蚊)has been eradicated in many parts of the world.
3.eradication v.消灭,根除(the complete destruction of every trace of sth.)
词根记忆:来自eradicate(v.根除,消灭)
例:The success of the program to eradicate smallpox has stimulated experts to pursue what they had not previously considered possible-better control, if not e,adication, of the other infections such as measles and yaws.
4.erase v.擦掉,抹去(to rub or scrape out);消除(to remove from existence or memory as if by erasing)
词根记忆:e+rase(擦)一擦掉
例:Please erase the blackboard.//The considerable progress made by Black people was erased by the new law.
5.ergonomic a.人类环境改造学的;人类工程学的(of or relating to ergonomics)
例:Designers of everything from cars to computer monitors have adopted a cornerless style of smooth surfaces and curves that is more errjonomic.
6.erode v.侵蚀(to wear away by the action of water or wind);削弱,损害(to cause to diminish, deteriorate, or disappear)
词根记忆:e+rode(咬)一咬掉--侵蚀
例:A constant stream of water eroded the rock mountain.
派生词:erosion(n.侵蚀,腐蚀)
7.errand n.差使(事)(如送信,买东西等)(a short trip taken to attend to some business often for others)
词根记忆:err(漫游)+and一跑来跑去一差使
例:Some family vehicles are used primarily for making short local trips,such as to do errands.