訓 と(ける),と(かす),と(く) ・ 音 ヨウ
Sino-Vietnamese: dung
The water radical 氵 plus 容 (contain): water that absorbs and dissolves things. Sino-Vietnamese dung, as in dung dịch (solution).
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砂糖を水に溶かす。 (さとうをみずにとかす)
Dissolve the sugar in water.