I have known Lilei since five years ago.

我五年前就认识李雷了。

youdao

I have visited most of the cities in China since five years ago.

五年来我已游遍了中国的大多数城市。

youdao

The chief engineer together with his colleagues ______ new scientific methods of farming since five years ago.

五年以来，总工程师和他的同事们一起一直在寻找新的科学农耕方法。

youdao

A new study says women's rights have gained some ground in Arab Gulf states since a similar study completed five years ago.

VOA: special.2009.03.07

Jordaan has been responding to such concerns since South Africa was awarded the rights to host the Cup five years ago.

VOA: standard.2009.06.12

But the Communication Workers Union (CWU) said the franchising system had cost "thousands" of post office jobs since it began five years ago.

BBC: RELATED BBC SITES

The most popular single smartphone since the existence of such a device, the iPhone has sold more than 244 million units around the world since its unveiling five years ago.

CNN: iPhone 5: The wait is over

As a result Apple lost the right to trade using the iPhone brand, and the ruling could be applied retroactively: iFone may be able to claim a cut of the profits Apple has made using the iPhone name in Mexico since it launched five years ago.

FORBES: Links 3 Nov: Apple's Latest Trademark Woes And Losing The iPhone Name In Mexico