口语英式
办理失业登记(以领取失业救济金)
to sign a form stating that you are an unemployed person so that you can receive payment from the government
sign on / up
(使)签约受雇(或入伍)
to sign a form or contract which says that you agree to do a job or become a soldier; to persuade sb to sign a form or contract like this
He signed on for five years in the army.他签了在部队服役五年的合同。
释义来自《牛津高阶英汉双解词典》第 9 版