It's three years since he left for Australia.

自从他去澳大利亚以来已三年了。

youdao

Three years have passed since he left for Australia.

自从他去澳大利亚以来已三年了。

youdao

He left the town of his birth five years later for Australia.

他5年后离开故乡去了澳大利亚。

《柯林斯英汉双解大词典》

Mr Harsanyi put up with it for a time, and continued with his studies, but in 1950 he left for Australia, about as far away from Europe as he could get.

ECONOMIST: John Harsanyi

He left London in 2001 for Brisbane, Australia, which he said was a more affordable place to raise his young family.

FORBES: A French Chef Looks To Break The Rules And Change The World With New Restaurant

The monarch was keen to have the tricky issue of the government's instability dealt with before he left for a planned tour of Australia and New Zealand early in 1952.

BBC: CONSERVATIVE VICTORY