放行单的英文：
release permit
v. 松开，排出，免除
n. 放松，发布的新闻
- release (of a pollutant)
排出污染物; 放出污染物 - release of nationality
国籍解除; 放弃（脱离）国籍 - memorandum of release
放弃索取换地权益备忘录 - margin release mechanism
极限释放机构 - Someone released on probation or on parole.
在鉴定期或有条件地被释放的罪犯。
v. 允许；准许；使成为可能
n. 许可证；执照；授权；允许；许可
- screening permit
放映许可证 - No entrance without a permit.
没有许可证不准入内。 - The modification was not permitted for security reasons.
由于安全原因不允许修改。 - excise fee of permit
执照税 - The facts permit of no other explanation.
事实不容许作其他解释。
