they towered above the world around them. 从周围的世界中高耸出来 Today's redwoods are nature's skyscrapers. 今天的红杉是大自然的摩天大厦 Reaching heights of more than a hundred meters, 高度超过100米 they are the tallest living things to have ever existed. 是史上最高的...
Reaching heights of more than a hundred meters, 高度超过100米 they are the tallest living things to have ever existed. 是史上最高的生物 But redwoods are just one of more than 400,000 species of plant, 但是红杉只是40万植物物种中的一个 the most visible signs of life on ...
plants began to battle for the real estate above, 植物开始争夺向上的空间 fighting for access to light. 以获取阳光 Eventually, some plants grew so tall, 最终有一些植物长得非常高 they towered above the world around them. 从周围的世界中高耸出来 Today's redwoods are nature's...
fighting for access to light. 以获取阳光 Eventually, some plants grew so tall, 最终有一些植物长得非常高 they towered above the world around them. 从周围的世界中高耸出来 Today's redwoods are nature's skyscrapers. 今天的红杉是大自然的摩天大厦 Reaching heights of more than a h...
Eventually, some plants grew so tall, 最终有一些植物长得非常高 they towered above the world around them. 从周围的世界中高耸出来 Today's redwoods are nature's skyscrapers. 今天的红杉是大自然的摩天大厦 Reaching heights of more than a hundred meters, 高度超过100米 they are the...
allowing them to grow bigger and stronger than ever before. 使植物能够生长得比以往任何时候 都更大、更强壮 No longer confined to carpeting the land, 不再局限于覆盖地面 plants began to battle for the real estate above, 植物开始争夺向上的空间 fighting for access to light. 以获取阳光 Eventu...
No longer confined to carpeting the land, 不再局限于覆盖地面 plants began to battle for the real estate above, 植物开始争夺向上的空间 fighting for access to light. 以获取阳光 Eventually, some plants grew so tall, 最终有一些植物长得非常高 they towered above the world around the...
lignin. 木质素 Lignin strengthened the plants' cell walls... 木质素加强了植物的细胞壁 allowing them to grow bigger and stronger than ever before. 使植物能够生长得比以往任何时候 都更大、更强壮 No longer confined to carpeting the land, 不再局限于覆盖地面 plants began to battle for th...
Key was the evolution of a new compound, 其关键是一种新化合物的进化 lignin. 木质素 Lignin strengthened the plants' cell walls... 木质素加强了植物的细胞壁 allowing them to grow bigger and stronger than ever before. 使植物能够生长得比以往任何时候 都更大、更强壮 No longer confined to carp...
Lignin strengthened the plants' cell walls... 木质素加强了植物的细胞壁 allowing them to grow bigger and stronger than ever before. 使植物能够生长得比以往任何时候 都更大、更强壮 No longer confined to carpeting the land, 不再局限于覆盖地面 plants began to battle for the real estat...