So researchers analyzed six years of barnacle goose migratory tracking data.

因此，研究人员对白颊黑雁六年来的迁徙追踪数据进行了分析。

If barnacle geese were truly made of wood, they could be deemed vegetarian and enjoyed during meatless fasts.

如果白颊黑雁真的是木头做的，牠们就能被当作素食，在不能吃肉的斋戒时期也能享用牠们。