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to think out; to devise; to invent; to begin to think; to come up with a plan
新しい方法を考え出した。
I devised a new method.
子供が面白い遊びを考え出す。
The child comes up with fun games.
困難を乗り越える策を考え出して実行した。
I devised a plan to overcome the difficulty and carried it out.