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1·When their food supply is sufficiently large, the lemmings live a normal, undisturbed life.

当食物供给量足够大时，旅鼠过着正常、不受干扰的生活。

2·When the lemmings' food supply becomes too low to support the population, a singular migration commences.

当旅鼠的食物供应不足以维持种群时，一次特别的迁徙就开始了。

3·However, when the lemmings' food supply becomes too low to support the population, a singular migration commences.

然而，当旅鼠的食物供应变得太少而无法维持种群时，一次特别的迁徙就开始了。

4·Great numbers of the lemmings begin a long and hard journey across the Scandinavian plains, a journey that may last weeks.

大批旅鼠开始了穿越斯堪的纳维亚平原的漫长而艰难的旅程，这段旅程可能持续数周。

5·A common theory for this unusual phenomenon is that the lemmings do not realize that the ocean is such a huge body of water.

对于这种不寻常的现象，一个普遍的理论是，旅鼠没有意识到海洋是如此巨大的一片水域。

6·You have to ask yourself why people line up, like lemmings, to take part in this peculiar sport.

你不得不问自己为什么人们像旅鼠一般盲目排长队来参加这项奇怪的运动。《柯林斯英汉双解大词典》

7·The lemmings leave their nests all together at the same time, forming huge crowds.

旅鼠在同一时间倾巢而出，形成了庞大的鼠群。

8·Upon reaching the coast, the lemmings do not stop but swim by the thousands into the surf.

一旦到达海岸，旅鼠不会停下来，而是成千上万地游进海浪中。

9·The lemmings eat everything in their path, continuing their destructive march until they reach the sea.

旅鼠会吃掉沿途的所有东西，继续它们破坏性的行进，直到它们到达大海。

10·Lastly, please don't mention lemmings.

最后，请不要提旅鼠。

旅鼠

1·When their food supply is sufficiently large, the lemmings live a normal, undisturbed life.

当食物供给量足够大时，旅鼠过着正常、不受干扰的生活。

2·Great numbers of the lemmings begin a long and hard journey across the Scandinavian plains, a journey that may last weeks.

大批旅鼠开始了穿越斯堪的纳维亚平原的漫长而艰难的旅程，这段旅程可能持续数周。

3·A common theory for this unusual phenomenon is that the lemmings do not realize that the ocean is such a huge body of water.

对于这种不寻常的现象，一个普遍的理论是，旅鼠没有意识到海洋是如此巨大的一片水域。

4·Populations of lemmings, caribou and red knot (a shorebird) have all decreased.

旅鼠，驯鹿和红腹滨鹬(一种滨鸟)的种群数量都有所下降。

5·Lastly, please don't mention lemmings.

最后，请不要提旅鼠。