Serious injures and deaths occur, and all of us must do what we can to prevent them. In this light, a substitution rule is worth considering.是什么意思_Serious injures and deaths occur, and all of us must do what we can to prevent them. In this light, a substitution rule is worth considering.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句