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envelope英英释意_发音_envelope同义词辨析_envelope词组搭配_envelope实用场景例句

首页英语词典envelopeenvelope英英释意

envelope

英['envələʊp;'ɒn-]

英英释义词组搭配实用场景例句

n. 信封，封皮；包膜；[天] 包层；包迹

英英释意

1. a flat rectangular paper container for papers

2. any wrapper or covering

3. a curve that is tangent to each of a family of curves

4. a natural covering (as by a fluid);: "the spacecraft detected an envelope of gas around the comet"

5. the maximum operating capability of a system;: "test pilots try to push the envelope"

6. the bag containing the gas in a balloon