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(electronics) amplifier
This amplifier improves the sound quality.
(dated, electronics) operational amplifier
This old operational amplifier still works accurately.
audio quality
The audio quality of these headphones is amazing.
improvement, progress
We are always aiming for the improvement of our services.
improve, rise
We are always aiming to improve our services.
ambition; drive
He has a strong ambition and is always seeking self-improvement.
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DiQt（ディクト）
無料
★★★★★★★★★★
