A backpack sends O2 in to let astronauts breathe normally.

一个背包可以输送氧气，让宇航员正常呼吸。

A large tree might make around 100kg of O2 per year.

一棵大树每年可以产生大约100公斤的氧气。

It takes about 7 to 8 trees to make enough O2 for one person to breathe for a year.

大约需要7到8棵树产生足够一个人呼吸一年的氧气。

Double add double o1, double o2.

double add double o 1, double o2。

Arsenal's shirts are now sponsored by O2.

阿森纳现在的球衣赞助商是O2。

The catalyst then knits pairs of oxygens together to make O2.

一对氧原子在催化剂上结合使其成为氧气分子。

In the UK the iPhone is only available on the O2 network on a monthly contract.

在英国，iphone只有在O2运营商的店里出售，并且至少要签一个月的话费合同。

O2's only current Windows Phone 7 handset could be the best for the platform yet.

目前O2运营的Windows Phone 7系统手机可以成为最好的平台。

Unlike other incumbents, BT has no mobile arm, having spun off O2 to reduce its debts.

与其他现任者不同，英国电信没有移动分支，出售其O2来减轻债务。

However, O2 dismissed the report, saying that it had benefited from the 'iPhone effect'.

不过，O2公司并不认同这份报告，并表示他们已经从“iPhone效应”中获益。

In Moscow, the family spent an entire evening together relaxing in the city's plush O2 lounge.

在莫斯科时，这一家子在这个城市的豪华氧吧里一起放松了一整个晚上。

Explore the history of British popular music at this interactive museum at The O2 in London.

在伦敦O2互动馆中探索英伦流行音乐进程。

An O2 spokesman wouldn't confirm any more details about the contracts, such as their duration.

一位O2的发言人不愿意透露更多的关于合同的细节，例如他们的合同期限。

Michael Jackson's 50-night run at London's O2 arena was to have set a new course for the entertainer.

迈克尔.杰克逊原先预定要在伦敦的O2舞台举行50场晚间演唱会，这些演唱会曾被认为将给他的演艺生涯带来一个新的篇章。

This is why most code is compiled with -o or -o2 and specialized code being compiled at higher optimization levels.

因此，大多数代码都用—o或—o2编译，只有特殊的代码用更高的优化级别编译。

On the train back up to Manchester later in the day, Ferdinand tweeted his excitement at spending the day at the O2.

当天晚些时候，在回曼彻斯特的火车上，费迪南德就他在O2度过的激动的一天发了推特。

O2, for most users, will provide the best value — with fewer hotspots but more genuinely unlimited Wi-Fi access to them.

对于大多数用户来说，O2能够提供最大的价值——虽然它提供的无线热点比较少，但是是更加名副其实的无限制无线上网。

A survey last year by O2, a mobile-phone operator, found that some 17% of Britain’s small businesses were using Twitter.

英国移动电话运营商O2去年的一份调查报告显示，已有17%的英国小企开始使用Twitter。

It wasn't until about a billion years ago that the atmosphere got another hit of O2, bringing us to the air we breathe today.

直到10亿年前，空气中再次注入氧气，这就是我们今天呼吸的氧气。

The functions of red cells include transportation of O2 to different cells of the body, simultaneously bringing CO2 into the lungs.

红细胞的功能包括运输o 2到身体不同细胞中，同时带回CO2到肺。

The 50-year-old revealed his plans on a makeshift stage at the 20,000-capacity O2 Arena where he will play 10 dates starting on July 8.

已经50岁的他表示，这次演出将在7月8日举办，共10场，场地临时定为能容纳2万人的O2 Arena。

A spokesman for O2 said the company is not planning to offer disgruntled users a better deal in order to convince them not to cancel their contract.

O2电信的一名发言人称，公司不打算给不满的用户提供更优惠的选择，这样做是为了说服他们，不主动取消自己的合同。

The warp-speed sales of the tickets to his O2 shows indicated that despite the scandals and the absence of new hits, he was still beloved by his fans.

他的O2演唱会的票瞬间售空，证明了虽然诽谤谣言不断，也没有发行新歌，他的歌迷却一如既往地热爱他。

Coincidentally, UK mobile operator O2 said Monday that it has forged an agreement with Twitter allowing users to receive free SMS alerts from Twitter.

巧合的是，在这个周一，英国移动运营商O2宣布，他们已经与Twitter达成协议，允许用户免费接收t witter的短信提醒。

The deal creates Britain’s biggest wireless operator, with a combined 37% of the market for subscribers, vaulting ahead of Telefónica’s O2 and Vodafone.

这一交易成立了英国最大的电信运营商，其合并后市场份额高达37%，超过了西班牙电信旗下的O2以及沃达丰。

They show Jackson on stage at the Staples Centre, in Los Angeles, where he was preparing for his sell-out concerts at the O2 Arena in London this summer.

剧照上，杰克逊站在洛杉矶的斯戴普斯中心(The Staples Center)的舞台上，为他将于今年夏天在伦敦O2 Arena剧场的演唱会紧张排练着，演唱会的门票早已销售一空。

Manufacturers including HTC, LG and Samsung have, however, signed up, while Vodafone, O2, T-Mobile and Orange are all likely to sell the devices in the UK.

不过包括HTC LG和三星在内的手机制造商已经签约使用此系统。 而沃达丰 O2 T-Mobile和Orange几家公司则将在英国承销这款系统。