相反，他们迁移出了“组织者”细胞群的边界，随后达到一个高浓度的音猥因子的位置，并发育成中指。
Instead, they migrated beyond the organizer's boundaries to a position where, later on, high concentrations of sonic hedgehog turned them into the middle finger.
这群鹦鹉通常把苏渥公园当作自己的家，目前已知它们每年有一段时间会往北迁移5英里，迁往西雅图的另一个公园。
The flock usually call Seward Park home but have been known to migrate 5 miles north to another park in Seattle for part of the year.
墨西哥湾的尤卡坦半岛，一群迁移的火烈鸟采取了古里古怪的形状。
A shifting flock of flamingos assumes a whimsical shape in the Gulf of Mexico.
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