预习记忆 单词 undergo在句子中的运用（下个讲解）
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先听句子，undergo在句子的运用，下节音频教单词记忆法。敬请期待！The town has undergone a great change during the last five years.在过去的五年里，这个城镇发生了巨大的变化。 The refrigerant in a household refrigerator also undergoes a cyclic process.家用冰箱的制冷剂也经历一个循环过程。