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他确信他会成功。
He is sure of his success.
youdao
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由于确信他的调频收音机不会成功，1954年，阿姆斯特朗从他位于13层的房间纵身跃下。
Determined that FM radio would never succeed, Armstrong jumped from the 13th floor of his apartment in 1954.
youdao
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他确信他的计划会成功。
He is sure that his plan will work.
youdao
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他确信他的计划会成功。
He is sure that his plan will work.
youdao