They have better capability than conventional submarines.

核潜艇的能力比常规潜艇强。

Paris was blindsided by Australia's move to scrap its contract for French conventional submarines and instead buy nuclear powered vessels from the United States.

让法国措手不及的是，澳大利亚取消了与法国的常规潜艇合同，转而从美国购买核动力潜艇。