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However, with the blowup of multi-source and large region covering ocean remote sensing data, there are still many difficulties in fast and automatic extraction of spatial information of ocean eddies.

但面对日益增长的多源、大面积海洋遥感数据，在快速自动化提取海洋涡旋的空间信息方面还存在很多难题。

"But given the bluntness of monetary policy as a tool for addressing developments that could lead to financial instability, the side effects of using policy for this purpose, and other difficulties, such circumstances are likely to be very rare."

"但是由于工具性的货币政策所导致的直接后果就是可能导致金融的不稳定，这也是这一政策的副作用，还有其他的一些问题，因此推出额外货币政策的可能很小。"

One of the main difficulties for foreign companies in China is the blurred line between public and private sectors.

在华外国公司面临的主要难题之一是公共行业和私营行业界限模糊。

Bobbie was not the kind to be discouraged by obstacles and later his ingenuity overcame the difficulties.

博比没有因困阻而气馁，不久之后他就克服了困难。

The difficulties here can be traced to Bodin's statement in 1576 that the sovereign who makes the laws cannot be bound by the laws he makes (majestas est summa in cives ac subditos legibusque soluta potestas).

这里的困难可以追溯到1576年 Bodin 的解释，他认为君主制定法律，而且不被他所制定的法律所限制。

You ought to face up to difficulties boldly.

你应该勇敢的正视困难。

You ought to face up to the difficulties boldly.

你应该勇敢的正视困难。

The road of life isn't Bon voyage, having a lot of difficulties to all need people to win.

人生的道路并不是一帆风顺，有很多困难都需要人们去战胜。

However, there still exist some difficulties and problems in BOP statistics.

但是，国际收支统计工作仍存在一些困难和问题需要解决。

Pierre saw that Boris was trying to change the conversation, and so he began explaining the advantages and difficulties of the Boulogne expedition.

皮埃尔心里明白，鲍里斯想要改变话题，于是答应他了，开始诉说布伦远征之事的利与弊。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。