annual rings

同根派生

Annual rings record a tree's age.
年輪標示樹齡。
The annual rings of plants growing in temperate climates can be seen in crosssection as two consecutive rings of light and dark-colored xylem tissue.
在有顯著季節性氣候的地區中，不少植物的次生木質部在正常情況下，每年形成一輪（色淺層和色深層）。
Dendrochronology A method of archaeological dating by the ANNUAL RINGS of tree, used when the lifespans of living and fossil trees in an area overlap.
樹木年代學：在一定的區域內儅生活樹木以及化石樹木的壽命有重曡時，通過樹木的年輪來推測考古學年代的方法。
Vol. 16 Barks &Annual rings Photographs of aged bark appearance, wooden grain, annual rings and stumps are included....Photographs of...
剛才;和劉偉副市長同乘環16路上班[原創]-大衆社區-山東論罈...
Chaperonage of reply every day of annual rings, arrive great occasion of nation long leave again, consider how much time spend a way........
伴隨的日日複複的年輪，又到國慶長假，考慮多少次的度過方式。。。。。。。。