运输作用是指水分和无机盐是通过木质部自下而上运输。
植物中物质的输送称为运输作用。
The transport of materials in plants is called translocation.
与曾经是大陆性陆地的一部分的海洋岛屿不同，由火山作用等地质过程形成的岛屿只包含可以被运输到那里的动植物。
Unlike Oceanic islands that were once part of continental landmasses, islands formed by such geological processes as volcanism contain only plants and animals that could be transported there.
这些富铁细胞是血细胞中最常见的类型，它们在给全身运输氧气的过程中起着主导作用。
These iron-rich cells are the most common type of blood cell and they play the leading role in transporting oxygen around the body.
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