但敌对情绪增加了英航的损失，该公司已经受到火山灰蔓延、长途旅行人数下降、税收即将提高等不利因素的困扰。
But the animosity is doing added damage to an airline already beset by negatives-from volcanic ash, to dwindling long-haul travel and looming tax increases.
含火山灰层沉积的植硅体分析为了解植被对从空中下降的火山灰的反应提供新的信息。
New information on the response of vegetation to air-fall volcanic ash is provided by analysis of phytoliths from sediments containing major tephra beds.
植硅体组合在4个主要的火山灰层都发生了明显的变化，表现在树木和灌木的急剧下降及禾草类和莎草科的繁盛。
Significant changes in phytolith assemblages occur at the same depth as four major tephra. indicating a sharp decline in trees and shrubs and a surge in grass and Cyperaceae.
植硅体组合在4个主要的火山灰层都发生了明显的变化，表现在树木和灌木的急剧下降及禾草类和莎草科的繁盛。
Significant changes in phytolith assemblages occur at the same depth as four major tephra. indicating a sharp decline in trees and shrubs and a surge in grass and Cyperaceae.
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