Legislation requires approval by both houses of parliament.

立法须得到议会两院的一致通过。

《牛津词典》

You've got the Houses of Parliament, Big Ben and all sorts of exciting things.

你已看到议会大厦、大本钟以及各种激动人心的事物。

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The Houses of Parliament are built from a mix of asparagus, green beans and runner beans which are mixed with baby sweetcorn to depict the intricate stonework.

英国国会大厦是由芦笋、青豆和红花菜豆与甜玉米混合而成，以描绘复杂的石雕。

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Now,theoretically, only the speakers and deputy speakers of the two houses of parliament may use the lights officially, but there are still dozens of cars on the Moscow roads that continue to exploit the advantages of a blue light on the roof.

VOA: standard.2010.05.19

and you've got the Houses of Parliament and Big Ben and all sorts of exciting things.

你还可以看到议会大厦、大本钟以及各种激动人心的事物。

关于伦敦眼的回忆 - SpeakingMax英语口语达人

The Houses of Parliament, London Eye and of course, Buckingham Palace.

议会大厦、伦敦眼，当然还有白金汉宫。

伦敦旅游景点 - SpeakingMax英语口语达人

Two of those days listed are regarding the 'Day of Opening of a Session of the Houses of Parliament' by the Queen and the 'Day of the Prorogation of a Session of the Houses of Parliament' also by the Queen.

BBC: When the union flag can fly at city hall but not at Stormont

The story of the Westminster village - the small enclave around the Abbey and the Houses of Parliament - is full of unexpected twists.

BBC: The hidden history of Westminster

This would not require an Act of Parliament but there would need to be a debate in both Houses of Parliament.

BBC: Ethics of using three people's DNA to create one baby