The asynchronous way requires to pass in a callback that is called once the Job is finished; in Ruby this is, of course, done with a block.

异步方式需要传递一个回调函数，一旦job完成工作便调用此函数；在Ruby中，这个当然是使用代码段来完成。

youdao

A great writer once called Thanksgiving the "one day that is ours … the one day that is purely American."

一位伟大的作家曾经称感恩节是我们的节日，是纯正的美国人的节日。

youdao

It is possible that this method is called more than once; that is why it appends the data instead of setting the data.

此方法有可能不止一次被调用；这就是我们添加数据而不是设置数据的原因。

youdao

Of course, the irony here is that Jobs once called up Steve Forbes and told him not to hire me.

FORBES: Personal Thoughts About Steve Jobs

And in sports, as in life, your number may be called just once -- oh, who's phone is that? (Laughter.) Is that one of the player's phones?

WHITEHOUSE: President Obama Greets the Gators

Mr Brooks believes that in the drive to eradicate racism from the force, what once might have been called racist is now labelled "poor training" or blamed on ignorant officers.

BBC: Met still racist says Lawrence's friend