It is not easy to be systematic and objective about language study.

系统、客观地看待语言学习并不容易。

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A number of techniques developed since the 1950s, however, have placed the study of these subjects on a sounder and more objective footing.

但是，自二十世纪五十年代以来一些技术的发展为这些学科的研究提供了更健全、更客观的基础。

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The Conference appeared as objective the study and strengthening of the educational initiatives for the managing responsible for the water.

UNESCO: Programa Hidrol��gico Internacional: Regional Conference of Water and Education for Europe and The United States

The objective of this study was to estimate the annual and lifetime medical costs attributable to obesity, to compare those to similar costs attributable to smoking, and to discuss the implications for prevention.

FORBES: Alcohol, Obesity and Smoking Do Not Cost Health Care Systems Money

Surprisingly, patients on meds showed little objective improvement, the study found.

FORBES: Sleep Talking