动词短语
中文翻译：确保不发生
同义词：
['prevent', 'guard against', 'safeguard against']
例句：
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1. We need toensure that all safety measures are in place before the event begins.
在活动开始前，我们需要确保所有安全措施都已到位。
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2.The company is ensuring against any financial risks by investing heavily in research and development.
该公司通过大量投资研发来确保防范任何财务风险。
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3. To ensure against fraud, we must double-check all transactions.
为了防范欺诈，我们必须对所有交易进行双重检查。