您要查找的是不是：
- “倒U曲线”假说 "upside- down U curve" hypothesis
- 说 persuade (politically)
- 倒U曲线 inverse U curve
- 假说 hypothesis
- 库兹涅茨倒U曲线 Kuznets' reversed U curve
- 曲线 (n) curved shape
- 倒U假说 Inverted-U-Type Hypothesis
- 说法 statement
- 真假 true and false
- 说出 utter
- 倒U型特征 converse U type characteristic
- 说到 respecting
- 说过 quoth
- 倒U型假说 Inverted-U Hypothesis
- 不用说 it goes without saying
- 说起 mention
- “倒U”理论 invert "U" theory
- β假说 beta hypothesis
- 倒U型联合炉 "U" reverse connecting furnace
- 假说的 hypotical
