So you want to write an "app"
现阶段，主流的脑机接口解决方案大体分为两类：侵入式/半侵入式脑机接口，通过植入电极，能够获得高时空分辨率的脑电信号，但开颅手术令非重症患者望而却步；非侵入式方案，如经颅磁电刺激等，安全性高，然而空间分辨率有限，且通常难以作用于深脑区。。搜狗输入法是该领域的重要参考
{ NULL, NULL } // sentinel，更多细节参见谷歌
easiest to test for, and fails to account for equivalence in performance, equivalence in security, equivalence in any scenario
engineers doing actual real things, in real production code bases. I wanted a