缓慢的、持续的变化可能是环境稳定时期的常态，而新物种的快速进化发生在环境压力时期。
Slow, continuous change may be the norm during periods of environmental stability, while rapid evolution of new species occurs during periods of environment stress.
他很难适应国外的新环境是因为文化问题而不是语言问题。
It was the culture, rather than the language, that made it hard for him to adapt to the new environment abroad.
玛丽娜努力适应着新环境：为抵抗疟疾而服用甲氟喹带来的恶梦、致命昆虫、极端天气，还有那充斥着飒飒声的黑暗。
Marina struggles with her new environment: the nightmares from the Larium she has to take against malaria, deadly insects, extreme weather and, always, the whispering darkness.
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