彼は使い慣れた枕でないと、ぐっすり眠れないそうだ。
He says he can't sleep soundly unless it's the pillow he's used to.
Listen to pronunciation
Handwriting
Example sentences
The fountain pen I've used for many years fits my hand perfectly.
Usage Notes
Used when someone becomes proficient or comfortable with a tool or object after long-term use.
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