blunt blade

基本解释

The blunt bulb keeps the internal blade from perforating the gut from the inside.
钝性保持内部刀片穿肠到里面。
And a moist blade kept in the shower, harbouring old hair and dead skin, can lead to ingrown hairs and irritation when shaving because the blade becomes blunt.
并且放在浴室的潮湿刀片上藏匿着旧头发和死皮，使用剃刀的时候会导致毛发内生，引发刺激性反应，因为刀片变钝了。
As quietly as I could I rummaged in the dark for my coat and pulled out my Swiss Army penknife. Its blunt two-inch blade felt about as lethal as an iced-lolly stick.
在黑暗中，我尽量悄无声息地从上衣口袋里拿出了瑞士军刀，两英寸的钝刀锋像一根冰棍那样难以致人于死地。