exit visa

例句：

1. 1. We need to apply for an exit visa before we leave the country.
   我们需要在离开国家之前申请出境签证。
2. 2.The passport issuance office will process your exit visa application.
   护照签发办公室将处理你的出境签证申请。
3. 3. The exit visa is valid for a period of three months.
   出境签证有效期为三个月。