By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.
通过吮吸铁杉幼嫩枝的汁液，树木的生长被毛茸茸的叶蝉阻碍，导致针叶从深绿色变为灰绿色，并提早掉落。
If we still depend on color TVs and a few similar industries, then Guangdong's 9% GDP growth can no longer be assured.
如果我们还依靠彩电和其他类似行业，那么广东9%的经济增幅就难以得到保证。
Photosynthesis directly influences the growth speed and leaf pigment content, and further affects the color expression of leaves of the colored-leaf trees.
光合作用直接影响彩叶树种的生长和叶片色素含量，进而影响彩叶树种的叶色表现。
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