addend in gate的用法和样例：
- A man appeared at the castle gate in the guise of a woodcutter.
- Gold go in at any gate except heaven's.
- All shops in gate areas will have all purchased liquids or gels sealed and will provide a proof of purchase to passengers.
- The power leakage principle of CMOS device is introduced, which is in direct portion to Hamming distance processed in gate.