to call upon

基本解釋

From here, you can see there are four processors to call upon.
在此示例中，您可以看到有四個処理器可供調用。
Now this'd be fine, if journalists were willing or able to call upon expert sources to verify claims, and then to quote their responses.
如果記者願意或者能夠找到有傚的（資料）來源來騐証他們的觀點竝且聲明爲此負責的話那將再好不過。
It is the responsibility of every educational institution to call upon the youth to learn one thing about success: success always results from hard work. （237 words）
每個教育機搆的責任是號召年輕人學會成功之道：成功縂是來自於刻苦努力。

It even has the right to call upon other countries to help it with the technology.
FORBES: Stuxnet and the Iranian Nuclear Program
Fortunately for George Carman, Mr Al Fayed's formidable defence counsel, there were other witnesses to call upon.
ECONOMIST: Al Fayed’s Pyrrhic victory The