large and heavy; difficult to carry 大而笨重的；难以携带的 cumbersome machinery 笨重的机器
slow and complicated 缓慢复杂的 cumbersome legal procedures 繁琐的法律程序
(of words or phrases 单词或短语 long or complicated 冗长的；累赘的；复杂的
Word Originlate Middle English (in the sense ‘difficult to get through’): from cumber ‘obstruct’ + -some.