By skimming, skimmers may find the main idea of a passage.
略读者可以通过略读找到一篇文章的中心思想。
2
Skimmers can figure out the main idea of a passage especially if it's a topic they're familiar with but they will not be able to remember all the pieces of information.
略读者可以弄清一段话的主旨，特别是如果这是一个他们熟悉的主题，但他们无法记住所有的信息片段。
3
Traditional oil skimmers are attached to large boats.