| 单词 | acorn |
| 释义 | acorn noun[C] uk/ˈeɪ.kɔːn/us/ˈeɪ.kɔːrn/anovalnutthatgrowson anoaktreeand has anouterpartshapedlike acup 橡实，橡子 marcelmooij/iStock/Getty Images Plus/GettyImages Fruits & seeds & their parts
acorn| American Dictionaryacorn noun[C] us/ˈeɪ·kɔrn,-kərn/thefruitof theoaktree, consisting of anovalnutwith atopshapedlike acup ACORN| Business EnglishACORN noun[S] uk/ˈeɪkɔːn/usabbreviationforA Classification of Residential Neighbourhoods: asystemofinformationabout how muchpeopleearn,theirsocialclass, etc. thatincludesallareasin the UK: A company'stargetingofconsumersis oftenbasedon ACORN. Examplesofacornacorn Individual oak trees are non-repeatable, and so they produce acorns in order for there to be other oak trees after the original ones die. From theCambridge English Corpus When the oblong-ellipsoidacornreaches maturity, it acquires a brown to reddish colour and becomes detached from the cupule, so falling to the ground. From theCambridge English Corpus The palisade parenchyma is interpreted as a barrier to desiccation of theacornand may have a photosynthetic function during the formation of the fruit. From theCambridge English Corpus Fully ripe acorns were obtained from the ground 15 days later. From theCambridge English Corpus Determinations were performed in quadruplicate on batches of six acorns or seeds each time. From theCambridge English Corpus In addition, the family also enjoyed grazing rights on the common land and the right to collect theacornharvest. From theCambridge English Corpus Apical structure that is essentially similar occurs in the physiologically mature acorns. From theCambridge English Corpus A marked reduction in the mean rate of water loss was recorded for intact acorns compared with those from which the pericarp had been removed. From theCambridge English Corpus Quantitative analysis ofacorntransportation by rodents using magnetic locator. From theCambridge English Corpus Their presence indicates a lack of activity of these vessels when theacornreaches maturity. From theCambridge English Corpus This area changes from green to reddish-brown when theacornreaches maturity. From theCambridge English Corpus Physiologically mature acorns were harvested from the tree when the pericarp started to change from green to reddish-brown. From theCambridge English Corpus Appalachian farmers and homesteaders typically ear notched their 150-200 hogs to harvest chestnuts and acorns from the 'open range' woods26. From theCambridge English Corpus The external surface and transverse sections of the pericarp from both mature and fully ripe acorns were examined by scanning electron microscopy. From theCambridge English Corpus Intact acorns showed a lower rate of water loss than isolated seeds, particularly during the first 6 days of the trial. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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