xylem vessels造句

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It would seem to me, the larger the tree, the stronger the xylem vessels would be, the stronger the force available from transpiration etc . . . The only answer I can think of as to why trees don't continue growing forever is that the eventually die, which leads me back to my above question concerning whether or not trees have natural lifespans.
It's difficult to see xylem vessels in a sentence. 用xylem vessels造句挺难的

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相邻词汇

用"xylem tissue"造句, 用"xylem tube"造句, 用"xylem tube ep"造句, 用"xylem vessel"造句, 用"xylem vessel element"造句, 用"xylems"造句, 用"xylen"造句, 用"xylena"造句, 用"xylena exsoleta"造句,

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