source columba造句

例句与造句

1. According to a 2007 newspaper report, "'Source Columba "'( British intelligence gathering operation in World War II.
2. In 1944, prior to the imminent Allied invasion, German counterintelligence sought to counteract ( or co-opt ) " Source Columba " by dropping pigeons of their own.
3. Despite such interference, the operation was reported to have been remarkably successful, yielding useful intelligence in over fifty percent of the received messages . 31 " Source Columba " pigeons eventually received the Dickin Medal, the highest British military decoration for animals.
4. It's difficult to find source columba in a sentence. 用source columba造句挺难的