名词
中文翻译：投资证书
同义词：
['investment document', 'investment receipt', 'investment voucher']
例句：
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1. The company issueda new investment certificate to its employees as a reward for their hard work.
公司为员工颁发了新的投资证书，作为对他们辛勤工作的奖励。
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2. The investor received the investment certificate and signed it with his name.
投资者收到了投资证书，并在上面签了自己的名字。
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3. The bank issued the investment certificate to the client as proof of the transaction.
银行向客户发放了投资证书，作为交易证明。