跟着单词boss走，就忘不了单词！
Difficult:是比较正式的，其重点是克服障碍需要特别的能力、智力、判断力、技巧或勇气。
也可指深奥或抽象的难题。【英译】Something that is difficult is not easy to do, understand, or deal with.
【例句】 Hobart found it difficult to get her first book published.
霍巴特发现要出版自己的第一本书很不容易。
The lack of childcare provisions made it difficult for single mothers to get jobs.
由于缺乏保育服务，单身母亲很难找到工作。
hard : 含义广，通俗用词，与easy相对，泛指任何难理解，不好处理或不易做的事。
【英译】Something that is hard is very difficult to do or deal with.
【例句】It's hard to tell what effect this latest move will have.很难说最近这次行动会有什么结果。
She found it hard to accept some of the criticisms directed towards her and her work.
她发现某些针对自己和自己工作的批评意见很难接受。
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