“刘易斯和克拉克探险”的概念、定义、翻译、参考文献-科学参考

单词	刘易斯和克拉克探险
释义	刘易斯和克拉克探险 Encyclopedia 历史学美国历史释 Lewis and Clark Expedition刘易斯和克拉克探险美国T.杰斐逊政府（1801～1809）时期组织的对北美大陆西部的探险活动。
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科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。