stepping stones
plural of Gulasarian
(US, government, military, espionage, aerospace) Initialism of National Reconnaissance Office launch.. An NRO spacelaunch for delivering a high security government payload into space.
plural of stepping stone
To make the harsh cry of a crow, rook, or raven.
彼女は濡れた石で滑らないように気をつけながら、飛び石を伝って小川を慎重に渡った。
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