A global campaign has been launched to turn a huge tract of Antarctic seas into ocean sanctuaries, protecting wildlife and banning not just krill fishing, but all fishing.

一场全球性的运动已经展开，目的是将大片的南极海域变成海洋保护区，保护野生动物，不只禁止捕捞磷虾，而是禁止所有的捕捞活动。

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After his daughter found him and called an ambulance, the old man died "because of a respiratory tract clogged by a nosebleed".

他女儿发现了之后赶紧叫了救护车，但是这位老人仍然因为鼻血堵塞呼吸道而窒息去世。

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After his daughter found him and called an ambulance the old man died "because of a respiratory tract clogged by a nosebleed".

他女儿发现了之后赶紧叫了救护车，但是这位老人仍然因为鼻血堵塞呼吸道而窒息去世。

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But the latest report says urinary tract infections after surgery increased more than three and a half percent.

VOA: special.2010.04.21

A lot has happened since the exuberant optimism of the political spirit that we see in a tract like Areopagitica.

弥尔顿在《论出版自由》中发表了极为乐观的政治思想之后,政治形势发生了很大变化。

耶鲁公开课 - 弥尔顿课程节选

Here Milton is elaborating on the details of his anticipation of his undying fame. This is a polemical tract about a new way in which the Anglican church government should be organized.

在这儿弥尔顿详细的讲述了他对自己,不朽之名的期望，这是一个关于英国国教教会,政府要采取新的组织方式的论辩文。

耶鲁公开课 - 弥尔顿课程节选

This is a play, not a tract or a treatie, but the idea that it embodies is that Utopia is not just unrealisable but it's unimaginable.

BBC: The Coast of Utopia

The iconic "Colorado Springs, Colorado" (1968), for instance, shows a woman silhouetted in a tract-house window.

WSJ: Review: West Coast Stories | 'Robert Adams' at Madrid's Reina Sofia Museum

Sepsis usually starts out as an infection in just one part of the body, such as a skin wound or a urinary tract infection, Tracey says.

CNN: Sepsis can strike, kill shockingly fast