四種類の金属を使うことで特定の共振を抑えます。
If, on the other hand, children are left alone a great deal with nothing to do, they are likely to become dull and unintelligent.
I rather like heights. You know, in my last life I must have been ... an aeroplane? Usually that would be 'bird' there.
I rather like heights. You know, in my last life I must have been ... an aeroplane?
Usually that would be 'bird' there.
By using four types of metal, specific frequency resonance is suppressed.
If your work becomes too mechanized, change jobs!
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