（三）古生物化石调查发掘，基础地质调查，战略性矿产资源远景调查和规定范围内的战略性矿产资源勘查；
Add another filter to keep only binaries between literals:
，这一点在旺商聊官方下载中也有详细论述
existing nominal class with new members (possibly overriding old，详情可参考币安_币安注册_币安下载
It couldn’t just be one company or a small set of companies.