1. If you are a student, you can omit questions 16–18. 学生可以免做16–18题。
2. There are as many textbooks that omit it as a type of movement as include it. 也有不少课本没有把它包括在冰川移动的一种类型里。
3. This technique allows researchers to create solutions that selectively omit certain nutrients and then observe the resulting effects on the plants. 这项技术使研究人员能够创造出选择性忽略某些营养成分的溶液，然后观察其对植物的影响。
4. Your textbook includes these as types, as a particular type of glacier movement, but you will see that there are as many textbooks that omit it as a type of movement as include it. 你们的课本中将这些分类，作为一种特殊类型的冰川运动，但是你们会发现，将其作为一种冰川运动类型的教科书和忽略这种类型的教科书同样多。
5. Other scientists have written books to explain their fields to non-scientists, but have necessarily had to omit the mathematics, although it provides the foundation of their theories. 其他科学家也曾著书向非科学家们解释他们的研究领域，但却不得不忽略数学运算以使得书籍简单易懂，尽管数学运算为他们的理论提供了基础。
