单词 | sap-wood |
释义 | ˈsap-wood [sap n.1] = alburnum.
1791E. Darwin Bot. Gard. i. Add. Notes 96 The placental vessels..are transformed from sap-wood..into inert wood. 1815J. Smith Panorama Sci. & Art I. 258 Boards..free from..sap-wood. 1887C. A. Moloney Forestry W. Afr. 353 A deep reddish-brown heartwood and light sap-wood. |

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