1：Obviously，if we don't control the problem, the chances are that……will lead us in danger.(很明顯，如果我們不能控制這一問(wèn)題，很有可能我們會(huì)陷入危險(xiǎn))
　　2：No doubt, unless we take effective measures, it is very likely that ……(毫無(wú)疑問(wèn)，除非我們采取有效措施，否則我們很可能會(huì)……)
　　3：It is urgent that immediate measures should be taken to stop the situation(很緊迫的是應(yīng)立即采取措施阻止這一事態(tài)的發(fā)展)