语用是从动态的角度对说话者和语言环境之间的关系进行研究，它是语法研究的重要组成部分。
The pragmatic is the research to the relation between communicators and background from the dynamic Angle, it is one of important components of grammar study.
针对深海地形崎岖不平、车轮打滑、周围能见度低等复杂的工作环境，本文提出了一种基于从动轮的航位推算定位方法。
Taking into account the complex working environment: uneven physiognomy of deep-sea, wheel's skid, low surrounding visibility and so on, I bring forward the dead reckoning based on the driven wheel.
针对深海地形崎岖不平、车轮打滑、周围能见度低等复杂的工作环境，本文提出了一种基于从动轮的航位推算定位方法。
Taking into account the complex working environment: uneven physiognomy of deep-sea, wheel's skid, low surrounding visibility and so on, I bring forward the dead reckoning based on the driven wheel.
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