安全凸面镜
Safety convex mirror
以上为机器翻译结果，长、整句建议使用 人工翻译 。
但是大部分人都不知道，之后这只小猪又在车道重点部位安装了凸面镜来加强房屋的安全防护。
Less commonly known is that the pig later improved his home's safety profile by installing convex security mirrors at key points along the driveway.
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