这本书包含了供进一步学习的补充材料。

The book includes ___supplementary materials for further study.

大学提供了一笔补充拨款以支持研究。

The university provided a ___supplementary grant to support the research.

她参加了一门补充课程以提高她的技能。

She took a ___supplementary course to improve her skills.