This is why emerald oftenw has flaws, which is reputed to be desirable. 所以在天然的祖母绿中,多半有细小的龟裂痕。
Efforts to stop the sbread spread of the ameraled emerald ash bover borer include cutting down afected affected trees. 为了组织祖母绿白蜡虫侵袭所作出的努力,还包含砍伐掉那些已经感染上虫害的树木。