英语词汇“protobird”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

protobird n.

Brit.

/ˈprəʊtə(ʊ)bəːd/

U.S.

/ˈproʊdəˌbərd/

/ˈproʊdoʊˌbərd/

(an informal name for) a hypothetical primitive bird or an animal regarded as forming an evolutionary link between fossil reptiles and fossil birds; cf. proavian n.

ΚΠ

1975 Q. Rev. Biol. 50 61 If we assume that protobirds spent more and more time gliding or actively flying through the air, then the thermal problem may have shifted from one of keeping out heat to one of retaining heat.

1990 Sci. Amer. May 49/1 The beginning of an arboreal life for these protobirds was probably linked to the evolution of warm-bloodedness and the simultaneous evolution of feathery structures.

2003 Economist 18 Jan. 79/3 On one side are the people who believe that the first proto-birds climbed into trees and that, as they glided down, they figured out how to flap.

单词	protobird
释义	> as lemmas protobird protobird n. Brit. /ˈprəʊtə(ʊ)bəːd/ , U.S. /ˈproʊdəˌbərd/ , /ˈproʊdoʊˌbərd/ (an informal name for) a hypothetical primitive bird or an animal regarded as forming an evolutionary link between fossil reptiles and fossil birds; cf. proavian n. ΚΠ 1975 Q. Rev. Biol. 50 61 If we assume that protobirds spent more and more time gliding or actively flying through the air, then the thermal problem may have shifted from one of keeping out heat to one of retaining heat. 1990 Sci. Amer. May 49/1 The beginning of an arboreal life for these protobirds was probably linked to the evolution of warm-bloodedness and the simultaneous evolution of feathery structures. 2003 Economist 18 Jan. 79/3 On one side are the people who believe that the first proto-birds climbed into trees and that, as they glided down, they figured out how to flap. extracted from proto-comb. form < as lemmas
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