Since then, one after another in the long Wudu River Formation and wide, and political area found more than one fossil of a giraffe .
此后,陆续又在武都的龙家沟和广河、和政一带发现了不止一种的长颈鹿化石。
Since the late 1990s, great progresses have been made in the area of political accountability studies.
20世纪90年代后期以来,这一领域的研究取得了巨大的进展。
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