1. Pemmican was traditionally used by indigenous people as a portable and nutritious food source during long journeys.
（在冗长的旅程中，原住民传统上使用干肉作为方便携带且富含营养的食物来源。）

2. The pioneers relied on pemmican to sustain them during their explorations of the wild frontier.
（拓荒者们在探索荒野的过程中依靠干肉来维持生命。）