This is why emerald oftenw has flaws, which is reputed to be desirable. 所以在天然的祖母綠中，多半有細小的龜裂痕。
Efforts to stop the sbread spread of the ameraled emerald ash bover borer include cutting down afected affected trees. 為了組織祖母綠白蠟蟲侵襲所作出的努力，還包含砍伐掉那些已經感染上蟲害的樹木。
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