It would be a crime to travel all the way to Australia and not stop in Sydney.

如果千里迢迢去澳大利亚而不在悉尼停留，那就是大错特错。

《柯林斯英汉双解大词典》

Where is Sydney? Australia.

悉尼在哪儿？在澳大利亚。

youdao

I'm from Sydney, Australia.

我来自澳大利亚的悉尼。

youdao

In Australia, the city of Sydney begins each new year with a fireworks show at midnight.

VOA: special.2010.07.04

The first Earth Hour was held in two thousand seven in Sydney,Australia.

VOA: special.2010.03.22

Australia's newest natural burial site sits in a quiet corner at Kemps Creek, on the edge of Sydney.

VOA: standard.2010.07.22

Wales play Australia in Sydney on 26 May and again in Brisbane on 2 June.

BBC: Johnson backs Wales tour strength

England face the All Blacks twice on 12 and 19 June and Australia in Sydney on 26 June.

BBC: Vickery to miss summer tour

There were plenty of tickets still available for the Twenty20 game featuring England and Australia at Sydney on 9 January and matches in the triangular one-day series, which also involves New Zealand.

BBC: SPORT | Cricket | Ashes tickets snapped up in hours