this increases the safety
这增加了安全性
以上为机器翻译结果，长、整句建议使用 人工翻译 。
This increases the friction between wheels and concrete, improving vehicle safety.
这样就能够增加轮胎与混凝土之间的摩擦力，增加行车安全。
youdao
This won't guarantee your screen's safety when you drop your phone, but it at least increases the likelihood of it surviving an impact at an angle.
ENGADGET: Samsung Galaxy S 4 review Mobile
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