egg
[(1) the rounded object containing unborn young produced by female birds, fish or reptiles; (2) a single cell in a female person or animal that can develop into a baby]
Sea turtles bury their eggs in the sand. (1)
Human eggs can be transplanted from one woman to another. (2)
either
[one of two, but not the other]
Can either of you tell me how to get to the airport?
elect
[to choose by voting]
The voters elected the state governor as President of the United States.
electricity
[a form of energy that flows through wires to provide heat and light, and power to machines]
We did not have electricity or clean water after the storm.
embassy
[the offices of an ambassador and his or her assistants]
All foreign embassies are in Washington.
emergency
[an unexpected and dangerous situation demanding quick action]
The President declared a wildfire emergency in New Mexico.
emotion
[a strong feeling such as love, hate, fear or sadness]
The dispute produced strong emotions on both sides.
employ
[to give work in return for wages]
Jane is employed as a prison guard.
empty
[(1) having nothing inside; (2) to remove everything]
The house was empty. (1)
The old man emptied his glass and asked for more water. (2)
end
[(1) to stop; (2) to finish; (3) the part which comes last]
The chairman ended the meeting. (1)
The year ended peacefully. (2)
We were happy to reach the end of the project. (3)
enemy
[(1) a person opposing or hating another; (2) a person or people of the other side in a war]
The two men were fierce political enemies. (1)
Enemy soldiers attacked allied forces on the island. (2)
energy
[(1) power used to do work, usually with machines; (2) the ability and willingness to be active]
Electricity provides most of the energy in our city. (1)
You can increase your energy by eating healthy food and exercising every day. (2)
enforce
[to make something be done]
Police enforce the law.
engine
[a machine that uses energy to cause movement or to do work]
He says his car's engine will not start.
engineer
[a person who designs engines, machines, roads, bridges or railroads]
He worked as an engineer in the space program.
enjoy
[to be pleased or satisfied by something]
Did you enjoy the movie?
enough
[(1) as much as necessary; (2) the amount needed]
Does Richard have enough money to buy her a ring? (1)
Richard said he had enough. (2)
enter
[to come or go into]
They entered the store together.
environment
[(1) all surrounding things, conditions and influences that affect life; (2) the natural world of land, sea, air, plants and animals]
The group support stronger laws to protect the environment from industrial pollution. (1)
Tell us what we can do to prevent further damage to our natural environment. (2)
编辑推荐：大学英语四级/cet4词汇带英文注释汇总
From:https://www.zgghmh.com/CET-4/20002906.asp