以下为句子列表:
英文: Bell spent his evening experimenting with tuning forks (forkshaped pieces of metal which always produce the same musical note and which are used to tune pianos),metal springs, and magneto batteries.
中文: 贝尔整晚用调音叉(叉状的金属条,它可以产生相同的音符,并且可以用来调钢琴、金属线、磁电池进行试验。
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