每个卷册都被编号并编入索引。

Each volume was ___numbered and indexed.

开往市中心的公交车编号为205路，每15分钟一班。

The bus to the city center is ___numbered 205 and runs every 15 minutes.

图书管理员将在上架前给新书编号。

The librarian will ___number the new books before shelving them.