1. After the islands separated, the isolated lizard populations would have become distinct species while also retaining their ancestors' niche adaptations.
岛屿分离后，孤立的蜥蜴种群将成为独特的物种，同时也保留了它们祖先的生态适应能力。
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2. Speakers of these cultures often read oral presentations from carefully retaining manual scripts.
来自这些文化背景的演讲者，在做口头报告时通常在念他们事先精心准备好的手写稿。
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3. The conditions for acquiring and retaining a thick nitrogen atmosphere are now readily understood.
现在很容易了解获得和保持厚氮大气的条件。
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4. But inside, special windows cut power bills by blocking solar heat in summer and retaining indoor warmth in winter.
但是在室内，特殊的窗户通过在夏天阻挡太阳的热量和在冬天保持室内温暖来减少电费。
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5. What's more, researchers are coming to recognize that dreaming is an essential part of understanding, organizing and retaining what we learn.
此外，研究人员逐渐认识到，梦对于我们理解、组织和记忆我们所学过的东西十分必要。
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6. Now, though, a novel type of steel has been developed that resists fractures at much lower temperatures, while retaining its strength and toughness—without the need for expensive additives.
