1·She was becoming indispensable to him.
对他来说她正变得不可或缺。
—— 《柯林斯英汉双解大词典》
2·She made herself indispensable to the department.
她成为这个部门不可缺少的一分子。
—— 《牛津词典》
3·Idleness is not just a vacation, an indulgence or a vice; it is as indispensable to the brain as Vitamin D is to the body.
懒惰不仅仅是度假、放纵或恶习；它对于大脑就像维生素 D 对身体一样不可或缺。
4·These aids would have been indispensable to very early people who would have found the process impossible without some form of mechanical aid.
远古人类会发现在缺少某种形式的机械辅助的情况下，这一过程是不可能实现的，这些辅助对他们来说不可或缺。
5·Water is indispensable to plants.
水是植物不可缺少的。
6·Books are indispensable to a scholar.
书籍是学者必不可少的。
7·Air and water are indispensable to life.
空气和水是生命所必需的东西。
8·Friendship is indispensable to people's life.
友谊对人的生活是不可缺少的。
9·Why is marking up a book indispensable to reading?
为什么在阅读过程中在书上做标记是必不可少的呢？
10·That water is indispensable to life is obvious.
很明显水对生命是必不可少的。