either - ad. one of two, but not the other
elect - v. to choose by voting
electricity - n. a form of energy that flows through wires to provide heat and light, and power to machines
embassy - n. the offices of an ambassador and his or her assistants
emergency - n. an unexpected and dangerous situation demanding quick action
emotion - n. a strong feeling such as love, hate, fear or sadness
employ - v. to give work in return for wages
empty - ad. having nothing inside; v. to remove everything
end - v. to stop; to finish; n. the part which comes last
enemy - n. a person opposing or hating another; a person or people of the other side in a war
energy - n. power used to do work, usually with machines; the ability and willingness to be active
enforce - v. to make something be done
engine - n. a machine that uses energy to cause movement or to do work
engineer - n. a person who designs engines, machines, roads, bridges or railroads
enjoy - v. to be pleased or satisfied by something
enough - ad. as much as necessary; pro. the amount needed
enter - v. to come or go into
本文来源：http://www.010zaixian.com/zuowen/ciyu/202295.htm