Smaller, more numerous species like the jellyfish are flourishing and plugging the gap left by animals higher up the food chain.
水母之类体形更小品种更多的物种正在蓬勃发展,填补着食物链中更高层动物留下的空白。
Plugging up the leaks that allow cold air to slip into your house—and drive up your heating bills—is an important first step in creating an energy-efficient home.
为防止冷风通过缝隙进入你的房子,从而增加你的暖气费,把那些漏风处都堵上吧。 这是让你的家变得节能的最重要的第一步。
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