这家咖啡店的三明治很有名，特别是他们的三层火腿芝士三明治。

This café is famous for its sandwiches, especially their ham and cheese ___triple-decker.

这座三层公寓楼每层都有阳台。

The ___triple-decker apartment building has a balcony on each floor.

伦敦的双层巴士很常见，但三层巴士就很少见了。

Double-decker buses are common in London, but ___triple-decker buses are rare.