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单词	air-breathing
释义	air-breathing Thesaurus Adj. 1. air-breathing - deriving oxygen from the air; "he studied respiration in marine air-breathing vertebrates"; "large air-breathing ichthyosaurs had hydrofoils" air-breathing air-breathing [′er ′brēth·iŋ] (mechanical engineering) Of an engine or aerodynamic vehicle, required to take in air for the purpose of combustion. air-breathing An engine that sustains its combustion by using oxygen from the incoming air. Both reciprocating and gas turbine engines are air-breathing, whereas a rocket carries its own oxygen and, hence, is not an air-breathing engine.
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