difficult
/ˈdɪfɪkəlt/adjective
1- needing much effort or skill to accomplish, deal with, or understand困难的, 费劲的; 难懂的：
she had a difficult decision to make
她要做出一个难做的决定
the questions are too difficult for the children.
这些问题对孩子们来说太难了。
1.1
- characterized by or causing hardships or problems艰难的; 有问题的：
a difficult economic climate.
恶劣的经济环境。
1.2
- (of a person) not easy to please or satisfy; awkward（人）难以取悦的, 挑剔的; 难对付的：
Lily could be difficult.
莉莉可能会难对付。
派生词
difficultly
adverb （〈罕〉）difficultness
noun词源
late Middle English: back-formation from DIFFICULTY.