we are not allowed to touch it we 括号 touch it 问用mustn't 还是ha

mustn't 表“禁止” “不许”
You mustn't put it off any longer,remember,tomorrow never comes.
你不得再拖延了,记住切莫依赖明天.
来自《简明英汉词典》
We mustn't presume too much upon the reliability of such sources.
我们不应过分指望这类消息来源的可靠性.
来自《简明英汉词典》
You mustn't drive into a street with a "No Entry'sign.
你切勿把车驶进有“不得进入”标示的街道.
来自《简明英汉词典》