Monks smuggled silkworm eggs to Constantinople in 550 AD, concealed inside hollow bamboo walking canes.
请问concealed是否是悬垂分词错误？
这个句子中的concealed...不是状语，而是silkworm egges的非限制性定语，等于一个which引导的非限制性定语从句。原句等于：
Monks smuggled silkworm eggs to Constantinople in 550 AD, which were concealed inside hollow bamboo walking canes.
正由于过去分词短语是定语，不是状语，因此只能坐落于句末地方。
假如误以为过去分词作状语，而将它置于句首，则成了悬垂分词，为语病。比如：
Concealed inside hollow bamboo walking cane, monks smuggled silkworm eggs to Constantinople in 550 AD.
假如说话人要用动词conceal作状语，则会用目前分词。比如：
Concealingsilkworm eggesinside hollow bamboo walking cane, monks smuggledthem to Constantinople in 550 AD.
Monks smuggled silkworm eggs to Constantinople in 550 AD, concealing theminside hollow bamboo walking canes.
还可以用介词加动名词结构：
Monks smuggled silkworm eggs to Constantinople in 550 AD by concealing theminside hollow bamboo walking canes.
由此可知，原句中的过去分词是定语，不是状语，因而不是悬垂分词。句子是正确的，没语法错误。