英德
有道
百度
谷歌
图片
维基
百科
艰深
abstruse
difficult to understand
difficult to understand
- 这是一段艰深难学的课程。
This is hard lesson to learn. - 当我在大学时，我一时心血来潮开始学习阿拉伯文。 我发现我热衷于挑战如此艰深的 语言，而且我对中东文化也很感兴趣，并且想要了解更多。
I started studying Arabic on a whim during college and I found I enjoyed the challenge of such a difficult language, in addition to my interest in knowing more about the Middle East. - 这种焊工技术专业性极强，事实上，作为电焊教师长的鲍勃.瑞奇维恩，对这些技术听都没有听说过。 艰深到只有经验丰富的焊工才能尝试。
So specialised, in fact, that Bob Richwine, the head welding teacher at the college, said he had never heard of them, and so difficult that only experienced welders could attempt them.
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中国词汇量第二的英语词典
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