失步保护
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Finally — and this is important — when a goose gets sick or is wounded by gunshot, and falls out of formation, two other geese fall out with that goose and follow it down to lend help and protection.
最后——也是关键的一点——遇有大雁生病或因枪击受伤掉队时，会有两只大雁离队陪着它，跟在后面提供帮助和保护。
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