addend in gate的用法和样例：
- A man appeared at the castle gate in the guise of a woodcutter.
- There are a lot of people coming in and go out in gate, this other places in Pyongyang are rare.
- Gold go in at any gate except heaven's.
- The power leakage principle of CMOS device is introduced, which is in direct portion to Hamming distance processed in gate.