这座小屋采用了坚固的A型框架结构，支撑着整个建筑。

The cabin features sturdy ___A-frames that support the entire structure.

这座A字形小屋的三角形屋顶在雪地里特别醒目。

The triangular roof of the ___A-frame cabin stood out prominently in the snow.

这辆自行车的A型车架非常坚固，适合山地骑行。

The bicycle's ___A-frames are very sturdy, perfect for mountain riding.