Commonly speaking, security services on the higher layer protect applications, security services on the lower level layer protect communication medium.
一般来讲，高层的安全服务用来保护某个应用，低层的安全服务用来保护某个传输媒介。
Scientists speculate that speaking commonly known phrases or singing very familiar songs might tap into different, possibly uninjured, parts of the brain than spontaneous speech does.
科学家推测读出认识的短语或唱出熟悉的歌曲也许和没受伤的那部分大脑功能相似，但绝对同于普通人自然地说话。
Of the commonly accepted four language skills, listening, speaking, reading and writing, listening is perhaps the most frequently used skill in daily life.
在英语四个基本技能听说读写当中，听是我们日常生活中最常使用的技能。
By focusing on words that are commonly used together you can improve your vocabulary and also your ability to understand your English-speaking colleagues.
通过学习这些经常搭配在一起使用的词语，大家的词汇量会得到提升，并且能够更好的与英语为母语的同事交流。
By focusing on words that are commonly used together you can improve your vocabulary and also your ability to understand your English-speaking colleagues.
通过学习这些经常搭配在一起使用的词语，大家的词汇量会得到提升，并且能够更好的与英语为母语的同事交流。
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