RATING – official certificate attesting to a pilot's skill level.

评级- 证明飞行员技术水平的官方证书。

You can either get an official certificate from a signing authority or ignore this message.

您可以从签名授权机构获得一个官方的证书，或者忽略该消息。

Licence: an official certificate issuedby the relevant association enabling a natural person to act as a players’agent.

执照：相关协会颁布给自然人，允许其从事球员经纪人工作的正式证书。

You should use this temporary certificate only during development, and purchase an official certificate for deployment.

只应在开发过程中使用该临时证书，在部署时应该购买正式证书。

Wood packing materials fumigated with methyl bromide should be accompanied with an official certificate attesting to the treatment.

用溴甲烷熏蒸处理过的木质包装应附有官方证书证明进行了这种处理…