But there are occasional signs of life. 即使在满是冰雪的童话世界中
Signs of the enemy are detected and examined closely. 敌人的行迹被发现并仔细检查
Often the only signs of life are what you hear. 只听到各种生物的鸣叫
scanning the ground beneath for signs of prey. 搜寻地上猎物的踪迹