a long straight part with a weight at the end that moves regularly from side to side to control the movement of a clock 鐘擺 - (figurative)
In education, the pendulum has swung back to traditional teaching methods. 教育界又恢複了傳統教學法。 the pendulum of public opinion 輿論的轉變
Oxford Collocations DictionaryPendulum is used before these nouns:- clock
Word Originmid 17th cent.: from Latin, neuter (used as a noun) of pendulus ‘hanging down’.- (figurative)