| 和 { 和 } 是正则表达式中的特殊字符和REPLACE 的第二个参数是一个正则表达式.尝试转义字符:

| and { and } are special characters in regular expressions and the second parameter for REPLACE is a regular expression. Try to escape the characters:

b = FOREACH x generate REPLACE(line1, '35\\|','');