名词
中文翻译：Unknown
同义词：
['safe', 'secure', 'safeguard', 'safeguard例句：1. The new security system has greatly improved our safety.（新的安全系统极大地提高了我们的安全。）']
例句：
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2.
使
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使
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1. The new security system has greatly improved our safety.
新的安全系统极大地提高了我们的安全。
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2.He secured the document with a password before sharing it with others.
他在与其他人分享之前用密码保护了这份文件。
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3.She secured her seat in the crowded theater.
她在拥挤的剧院里找到了一个座位。