New words：

conduction [kən'dʌkʃn] n.（热或电等能量的）传导
conductor [kənˈdʌktər] n.指挥家；导体；售票员；列车长

必记高频搭配

heat/electric conduction 热传导 / 电传导

Heat conduction is a common physical phenomenon.

the conduction of sound 声音的传播 / 传导

Water is good for the conduction of sound.

a music conductor 音乐指挥家

Her dream is to become a famous music conductor in the future.

a good/bad conductor 良导体 / 不良导体

Plastic is a bad conductor of electricity.

a bus/train conductor 公交 / 火车售票员

The bus conductor asked me to buy a ticket when I got on the bus.

phenomenon [fəˈnɒmɪnən] n.现象

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