在爆炸之前，工程的总指挥，李永安向公众保证爆炸不会引发地震。
Prior to the explosion, the project's general manger, Li Yong'an, reassured the public that the blast wouldn't spark an earthquake.
李永安翻译的《图书馆学问题》，是现在所见到巴特勒《图书馆学导论》的最早中文译本。这一译本久被忽略，存在多方面的原因。
The first translation version of Pierce Butler's An Introduction to Library Science in China, the interpreter was Li Yong'an, was neglected chronically for some reasons.
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