When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time.
音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。
When it is struck, a tuning fork produces an almost puretone, retaining its pitch over a long period of time.
音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。
At the Green Fork, he had fought in mismatched scraps of plate from Lord Lefford's wagons, with a spiked bucket helm that made it look as if someone had upended a slops pail over his head.
在绿叉河，他战斗时穿的是一身从莱佛德大人的货车里找到的不合身的破铠甲和一个锥顶的看起来像有人扣了个马桶在他头上的水桶盔。
When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time.
音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。啚。
When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time.
音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。栨。
When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over along period of time.
音叉被敲击时，产生几乎纯质的调子，其音量历久不衰。
When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over along period of time. 19.
音叉被敲击时，产生几乎纯质的调子，其音量历久不衰。
When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over along period of time. 19.
音叉被敲击时，产生几乎纯质的调子，其音量历久不衰。
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