key to
phrasal verbkey somebody/something to something
- [usually passive] (especially North American English) to make somebody/something suitable or appropriate for a particular purpose
synonym gear使某人(或某事)适合于某事 - The classes are keyed to the needs of advanced students.
这些课是针对高年级学生的需要开设的。
- The classes are keyed to the needs of advanced students.