农场的筒仓装满了一年的收成，足够牲畜们吃到明年春天。

The farm's ___silo is filled with this year's harvest, enough to feed the animals until next spring.

研发部门像一个孤岛，很少与其他团队交流。

The R&D department operates like a ___silo, rarely communicating with other teams.

这个秘密军事基地的导弹发射井被严密保护着。

The missile ___silos at this secret military base are heavily guarded.