Watching a film such as Shakespeare's Henry V becomes a lesson in British history. Bird-watching is a science and totting up the shopping list is a form of maths.
看一场像莎翁的亨利五世这样的电影就成为英国历史课的内容，观察鸟类就等于在上自然科学课，清算购物账单就是上数学课。
By flying in V formation the whole flock adds at least 71% greater flying range than if each bird flew on its own.
以V字形队列飞行的整个鸟群会比一只单独飞行的大雁多至少71%的飞行区域。
By flying in V formation the whole flock adds at least 71% greater flying range than if each bird flew on its own.
以V字形队列飞行的整个鸟群会比一只单独飞行的大雁多至少71%的飞行区域。
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