1.I don't think it wise for [of] him to choose such a difficult subject.
我认为他选择这样难的学科是不明智的。
2.Philosophy is often described as a difficult subject. There are various kinds of difficulty associated with it, some avoidable.
常有人说哲学是很难的一门课。与哲学相关的难处，有各种各样的；有些是可以避免的。
3.This book provides a concise overview of thermodynamics, and is written in a manner which makes the difficult subject matter understandable.
这本书提供热力学的简明的概述，并且被用使难的主要内容可理解的一种方式写。
4.The transference of artistic concept in literary translation is a very significant yet difficult subject to be explored.
文学翻译中的意境移植问题一直是一个很重要但难以探索的研究领域，其困难在于意境内涵的复杂性。
5.Really see other people eating with relish that they do not eat anything, I really The difficult subject!
真的看到其他人吃的津津有味，他们不要吃什么，我真的很难受！
6.It provides a stimulating and accessible read that clarifies the complexities and persities of a difficult subject.
它提供了一个启发性和方便阅读该澄清的复杂性和多样性的一个棘手的问题。
7.Perhaps there'll be a valuable learning experience, where someone teaches you about a difficult subject, and the penny finally drops.
或许他们会变成值得学习的经验，有些人会在某些非常难的科目上教导你，最后会破点小财。
8.The issue of pile-soil interaction is the research hotspot and difficult subject in pile foundation engineering for recently several years.
桩土相互作用问题是近年来桩基工程中的研究热点与难点课题。
9.Physics is one of the most difficult subject for me.
物理对我来说是最难学的科目之一。
10.In fact, Hayek hailed Strigl's work "for the simplicity and clarity of exposition of a notoriously difficult subject. "
事实上，施特里格尔的著作被哈耶克誉为“对出了名的难题的简单而又清晰的论述。”