kero-kero
The rhythmic croaking of frogs, especially in rice paddies during the rainy season. A signature sound of early Japanese summer evenings in the countryside.
💡Walking by rice paddies in June — 'You can hear the frogs singing kero-kero all night in the fields.'
田んぼでかえるがけろけろ鳴いている。
Frogs are croaking kero-kero in the rice paddies.
On rainy nights, the frogs in the rice paddies croak ___ until dawn.
雨の夜になると、田んぼのかえるが夜明けまで○○鳴いている。