walls off

It was powerful enough to blow the roof and walls off a building, the Kyodo news agency reported.

共同通信社表示，这次爆炸的威力足够掀翻屋顶或把建筑物切开。

The immune system "walls off" the TB bacilli which, protected by a thick waxy coat, can lie dormant for years.

免疫系统会把结核杆菌“屏蔽”起来，结核杆菌在厚厚的腊质胞壁的保护下可潜伏多年。

The immune system either kills the germs, or "walls off" the TB bacilli where they can lie dormant for years.

免疫系统可杀死病菌或“隔离”结核杆菌，潜伏期可长达数年。