This strategy, known as pre-exposure prophylaxis, or PrEP, is based on the concept that blocking HIV's replication immediately after exposure to the virus may prevent infection.

这一策略被称为“暴露前预防”(PrEP)，是建立在这样的概念基础上：在接触病毒之后立即阻断HIV的自我复制可以预防感染。

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Thirdly, considering cancer-cell derived exosome can modify pre-metastasis niches [6], depleting these exosomes from circulation system is a possible option for blocking cancer metastasis.

第三，由于肿瘤细胞来源的外泌体可修饰转移前微环境 境[6]，从循环系统中去除这些外泌体可能可以阻止癌症的转移。

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Palm's actions makes it seem like there are no other ways for a device to interact with iTunes, and the company's outraged response to Apple blocking the Pre make it seem like Apple is wrong for forbidding non-iPod devices from masquerading as iPods.

ENGADGET: Editorial: Palm, iTunes, and the ties that don't bind

Emotion UI is also pre-installed with a smartphone housekeeper function to support real-time data traffic tracking, automatic blacklisting and blocking, periodical system cleaning, and spontaneous exiting of idle programs and cache cleanup, in addition to anti-virus, energy saving, privacy protection, software management, and more.

ENGADGET: Huawei Ascend P2 hitting Europe in Q2 for 399 euros, we go hands-on (update: video)