It was used as the opening/closing ceremonies as well as for athletics. Although it wasn't called that in 2000.
The tilde is used to indicate allophones in free variation, e.g. [e] ~ [ɛ].
Wembley Arena
Yes, Wembley Arena
Basketball Arena, North Greenwich Arena, Riverbank Arena, Water Polo Arena, Wembley Arena.
It is mostly used for music concerts. It will also be used for some of the events at the London Olympics in 2012.
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Water Polo Arena
The O2 Arena, or North Greenwich Arena, as it was known during the recent Olympics, is an entertainment complex in London. It is mostly used for concerts, with many big entertainment names like Metallica, Rolling Stones and Beyonce performing there. Many sporting events are held there, from Tennis to Darts, as well as other entertainment events.
In linguistics, phonemes are the distinct sounds that can change the meaning of a word, while allophones are variations of a phoneme that do not change the meaning of a word.
The Beijing National Stadium. (Bird Nest)
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The decision on which phoneme is standard and which are its allophones depends on the distribution of sounds in a language. If two sounds do not contrast in a way that changes the meaning of a word, they are likely allophones of the same phoneme. Analyzing minimal pairs and complementary distribution can help identify the standard phoneme and its allophones.