독해 부탁 드립니다.

The study suggests those more adventurous personalities could be an adaptation to the limited window of activity left by the long,snowy northern winter.limited window of activity left by the long, snowy northern winter 여기의 문장구조가 이해가 안되고
해석이 안되네요 ㅠ_ㅠ
부탁 드립니다.감사합니다.