This book is peculiarly difficult.

这本书特别难。

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This topic is peculiarly difficult to write about.

这个题目特别难写。

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So much, then, for the history of the study of administration, and the peculiarly difficult conditions under which, entering upon it when we do, we must undertake it.

对于行政学研究的历史以及特殊困难的条件就谈论这么多。当我们已经进入这一领域时，我们必须在这样的困难条件下展开研究工作。

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Koetsu's sources reached back hundreds of years, and yet his way of writing "fat and thin" characters, some bold and emphatic and others trailing to the faintest visual whisper, was peculiarly his own (at least among Japanese calligraphers) and difficult to emulate.

CNN: ASIANOW - TIME Asia | The Subtle Magic of Koetsu