in fact, it is seen only under special circumstances such as using a special naming convention to mark methods for internal consumption.
事实上,只有在特殊环境中才会看到这种名字,比如使用特殊的命名约定将方法标识为内部消费。
under special circumstances and with the approval of the director general of the customs, the customs can carry out checks without prior notice.
在特殊情况下,经海关关长批準,海关可以不经事先通知进行稽查。
under special circumstances an extension may be granted with the approval of the customs.
在特殊情况下,经海关同意,可以延期。