The book he's trying to read goes back to long before even the first word was written, and it is a story of migration.

他尝试阅读的这本书可以追溯到很久以前，甚至在第一个字被写出来之前，这是一个关于移民的故事。

youdao

I actually did have to roll back the server migration from my first example because of time.

对于第一个示例，由于时间的原因，我实际上不得不回退了服务器迁移操作。

youdao

However, anybody who has this markup would want the override, so we folded it back into the original migration.

但是任何有这种标记的人都需要改写，因此我们又将其放回了原来的迁移中。

youdao

But he says even as France cracks down on family migration and sends illegal immigrants back home, it is making it easier for highly-skilled immigrants to come in.

VOA: standard.2010.01.20

The second is that there may have been back-migration into Africa to muddy the genetic water.

WSJ: Matt Ridley on Early Humans Leaving Africa | Mind & Matter

In 2010, 34% of rural migrant workers left their factory jobs to move back home, according to the most recent data available from the Rural-Urban Migration in China and Indonesia project at Australian National University.

WSJ: Companies Seek to Avoid China New Year Hangover