Although BCEL has worked for this purpose, it's sometimes proven more difficult to use than I'd expected when I began the project.
虽然BCEL可以用于实现这个目的，但是，它有时使用起来要比我开始这个项目时期望的更困难。
Ms Blohowiak and her colleagues disagreed, deciding not to use the new font because it was sometimes difficult to read on screen.
Blohowiak和她的同事不同意此观点，决定不使用这种新字体，原因在于该字体在电脑屏幕上有时难以辨认。
Sometimes, it is very difficult to make a class thread-safe without compromising its functionality, ease of use, or performance.
有时，要在不影响类的功能、易用性或性能的情况下使类成为线程安全的是很困难的。
Case sensitivity is sometimes difficult for SQL programmers to remember, as SQL query syntax permits them to use "zip," "zip," and "zip" to refer to the same column name.
SQL程序员有时候很难记住大小写敏感这一点，因为SQL查询语法允许使用“zip ”、“ zip ”和“ zip ”来引用同一个列名。
Although the Control Panel is a good tool, it can sometimes be difficult to use.
虽然控制面板是一个很好的工具，它有时很难使用。
The use of idioms and colloquialisms make them vivid to read. It is important and sometimes difficult to realize this in translation. From three aspects, it is discussed in this article.
这类文章常使用习俗语表达较强的形象性，因此译文表现出实现这一特点成为翻译中的难点。
Sometimes, in order to overcome these shortcomings to use bored piles and post-grouting pile, but bored piles are difficult to drilling in sand stratum, drill pipe sticking and dropping often appears;
有事为了克服以上缺点改用钻孔灌注桩和后压浆灌注桩，但灌注桩在砂土地层中也不易钻进，常出现卡钻、掉钻；
Sometimes, in order to overcome these shortcomings to use bored piles and post-grouting pile, but bored piles are difficult to drilling in sand stratum, drill pipe sticking and dropping often appears;
有事为了克服以上缺点改用钻孔灌注桩和后压浆灌注桩，但灌注桩在砂土地层中也不易钻进，常出现卡钻、掉钻；
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