speculative。
词性：形容词。
释义：投机的；思考的；推理的；揣摩的。
例句1:Many government regulations distinguish between investment and speculative gradesecurities. 许多政府监管规定对投资级别和投机级别的证券进行了区分。
例句2：Forcing banks to adopt higher capital ratios may curb
