The construction of the Three Gorges Project entails large migration.

三峡工程建设需要大规模移民。

You've just participated in the world's largest migration.

你刚才就参与了世界上最盛大洄游现象。

The count down to their autumn migration has already begun.

秋季迁徙已经开始了倒计时。

The birds also tend to stop their migration following a full moon.

欧夜鹰在满月之后还倾向于停止迁徙。

Bianchi and his team tracked these ocean migrations with sonar data.

比安奇和他团队利用声纳数据追踪大海中生物迁徙活动。

The result was a mass migration of the herbivores that consumed them.

其结果就是动物大规模迁徙。

In exchange, though, Tunisia has to help stem illegal migration to Europe.

不过，作交换，突尼斯必须帮助阻止非法移民前往欧洲。

The other thing is in versus out migration.

另外一件要考虑就是迁移。

The US and Panama signed an agreement to curb illegal migration in July.

美国和巴拿马于 7 月签署了一项协议，遏制非法移民。

We're also tackling illegal migration and stopping criminals from abusing our asylum system.

我也在处理非法移民问题，阻止罪犯滥用我庇护制度。

These are migrations that have been compared to migrations on the Serengeti in Africa.

“这些迁徙可与非洲塞伦盖蒂平原上大迁徙相提并论。

We are worried the electric dams will effect the fish migration and reproduction rates.

我担心电力大坝会影响鱼类迁徙和繁殖率。

What I stand for is to stop this illegal migration.

我所主张是阻止这种非法移民。

This herd of over one hundred thousand makes the longest migration of any land animal.

这群十万之众驯鹿迁徙旅程是所有陆地动物中最长。

But it remains a powerful symbol of America's westward migration that continues to this day.

但是时至今日一直是美国西进移民时期一个有力象征。

In recent years, more and more people have discovered the migration.

近年来，越来越多人发现了这些鸟类迁徙活动。

Iran's nomads have been making the same migration for millennia.

伊朗游牧民数千年来一直在进行同样迁徙。

Elmore's next project will use radar to help predict bird migrations.

埃尔莫尔下一个项目将使用雷达来帮助预测鸟类迁徙。

For most, this momentous migration is their first.

对于大多数来说，这次迁徙是他处女旅。

It allowed nearly anyone to record bird migration at night.

这让几乎所有人都能在夜间录制鸟类迁徙叫声。