n.  钟摆

• the pendulum 〔主张、信念等的〕摇摆不定

• the pendulum of fashion  时尚的钟摆

• the pendulum of public opinion  舆论的转变

• In education, the pendulum has swung back to traditional teaching methods. 教育界又恢复了传统教学法。

• After several years of Republican government, the pendulum will undoubtedly swing back and voters will elect a Democrat. 由共和党执政数年后，选民无疑会掉过头来，选出一位民主党人。

BrE /əˌbriːviˈeɪʃn/