Despite looking curved it's actually made entirely of straight timber.

尽管看起来是拱形的，但事实上它完全是由直的木段制成的。

This is the Mathematical Bridge. Despite looking curved it's made entirely of straight timber.

这是数学桥。数学桥尽管看起来是拱形的，但事实上它完全是由直的木段制成的。

The reason for constructing the buildings from wood is probably that ideally proportioned straight and slender timber was available in large quantities in Scandinavia's vast pine forests.

用木材作为建筑物材料的原因可能是，又直又细的木材比例完美，且斯堪的纳维亚半岛的广阔松树林中可以大量供应。