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an ecosystem (system of an ecological community and its environment)
The ecosystem of this lake is very fragile.
珊瑚礁: a coral reef
Coral reefs play a very important role in the marine ecosystem.
accomplish, perform, fulfill
He worked hard to accomplish his goals.
role
His role is the team leader.
important, significant
Health is very important.
importance, consequence, significance
His opinion is very important.
extraordinary, unusual
I was amazed at his extraordinary talent.
emergency
Please press this button in case of emergency.
very; extremely / exceedingly; tremendously
It is a very beautiful view.
ecology, mode of life of living creatures / way of life, the way people live
He is an expert in ecology.
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