let - (人)に…させる, until - …まで, era - 時代、年代, population - 人口, rapidly - 速く、急速に, feather - 羽, development - 開発, destroy - …を破壊する, destroyed - destroyの過去形, environment - 環境, capture - …を捕まえる, captured - captureの過去分詞, breed - …を飼育する, breeding - breedのing形, safely - 安全に, die - 死ぬ, died - dieの過去形, government - 政府, fly - 飛ぶ, crested ibis - トキ, -born - …生まれの, up-until - まで, one by one - 1人ずつ,

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