Flames ravage the thick understory provided by species like douglas fir, a shade-tolerant tree that's able to thrive under the canopy of lodgepole pines.

火焰燃烧着底层茂密灌木，如花旗松，这是一种能在树荫下茁壮成长的树，它们长在黑松树的树荫下。

It took them just six months to build, using local materials wherever possible, including cedar and douglas fir.

他们只用了六个月的时间建造， 尽可能使用当地材料， 包括雪松和花旗松。