be difficult of hard to have difficulty in
be difficult of
hard to
have difficulty in 英 [hæv ˈdɪfɪkəlti ɪn]
难于启齿用英文怎么说
难于控制用英文怎么说
难于理解用英文怎么说
难于登天用英文怎么说
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英语词典收录了最新的汉英词典和英汉词典，总共有200多万个词条，词库仍在不断更新中。
