1·当然，回文数的首和尾都应是非零的，因此0220就不是回文数。
Of course, palindromes have neither leading nor trailing zeroes, so 0220 is not a palindrome.
2·飞行员本应在格林威治时间0220和巴西空中控制部门进行最后一次通话。
The pilots were scheduled to enter contact for the last time with Brazilian controllers at 0220 GMT.
3·随后飞行员把应答机的代码设置为0220，这样飞机的身份信息就能正确显示在航空管制的雷达屏幕上。
The pilot then selects the 0220 code on their transponder and the track on the radar screen of the air traffic controller will become correctly associated with their identity.