例句
英语四级真题
  • Experts observe that textbooks come in layers, something like an onion.
    2019年12月四级真题(第三套)阅读 Section C
  • These microscopic layers of deposits containing bacteria are known as biofilms and they are found on most surfaces and objects.
    2018年12月四级真题(第三套)阅读 Section B
  • They "customize" their books by engaging with different layers and linkages.
    2019年12月四级真题(第三套)阅读 Section C
英语六级真题
  • The outer layers of the volcano were worn away until the hard core stood completely exposed.
    2016年12月六级真题(第二套)听力 Section B
柯林斯高阶英汉双解学习词典释义