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effect; virtue; efficacy; impression
one's dominant eye
この薬は飲んでから三十分ほどで利き目が現れる。
This medicine takes effect about thirty minutes after you take it.
新しい肥料の利き目は予想以上に早く現れた。
The new fertilizer showed its effect sooner than expected.
漢方薬は即効性はないが、長期的に利き目がある。
Chinese herbal medicine does not work instantly, but it is effective over the long term.