194 篇文章
Following the flow of wind means that they're always heading toward areas of low pressure,
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Following the flow of wind means that they're always heading toward areas of low pressure, 随着风向迁徙意味着 它们总是飞向低压地区

their food is always on the move.
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their food is always on the move. 它们的食物总是在移动

the journey to the sea is not always smooth or uninterrupted.
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the journey to the sea is not always smooth or uninterrupted. 流向大海的过程也并非都是平缓连续的

they can always descend to lower warmer altitudes
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they can always descend to lower warmer altitudes 便会搬迁到温暖的低海拔地区