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a.
(生态的,生态学的) of or relating to the science of ecology; characterized by the interdependence of living organisms in an environment


Spelling Word: ecological
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a. Syn. frugal; cheap; economical
(经济的,经济学的,有利润的) pertaining to economy; frugal; cheap


Spelling Word: economic
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n. Syn. worker
(雇员) worker; person who works for another in return for financial or other compensation


Spelling Word: employee
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a.
(永恒的,持久的,无止境的) continuing forever or indefinitely


Spelling Word: everlasting
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n. Syn. proof; testimony
(证据) something which makes evident or manifest; any mode of proof


Spelling Word: evidence
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n. Syn. outside; appearance
(外部,外表) outside; external or outward appearance


Spelling Word: exterior
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a. Syn. exterior; outer
(外部的,表面的) exterior; outer; suitable for application to the outside


Spelling Word: external
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v. Syn. derive; remove; squeeze
(拔出,榨取) draw or pull out, usually with some force or effort; remove; get despite difficulties or obstacles


Spelling Word: extract
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v. Syn. disappear; die out
(减弱下去,褪色,消失,枯萎) disappear; die out; lose color; lose freshness


Spelling Word: fade
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n. Syn. achievement; accomplishment
(功绩,特指勇敢的行为,壮举) achievement; accomplishment


Spelling Word: feat