他们发现，虽然马来熊独自生活，但它们已经发展出一种惊人的社交技能。
They found that although sun bears live alone, they have developed a surprising social skill.
硅谷的发展速度惊人。
许多慢性疾病发展缓慢，但生活方式和行为变化却以惊人的速度席卷全球。
While many chronic conditions develop slowly, changes in lifestyles and behaviours are occurring with a stunning speed and sweep.
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