这位资深工程师负责指导团队中的初级成员。

The ___senior engineer is responsible for mentoring the ___junior team members.

高年级学生在准备毕业，而低年级学生正在适应新课程。

The ___seniors are preparing for graduation, while the ___juniors are adjusting to new classes.

高年级学生有优先使用图书馆的权利，而低年级学生需要排队等待。

___Senior students have priority access to the library, while ___junior students need to wait in line.