dozens

dozens of这个短语是属于可数名词，dozens of的意思是几十；很多等等。dozens of后可以接可数名词的复数形式，但是of不能省去。例句：Dozens of people have been injured and many vehicles set on fire。

Dozens of servants had catered to his every whim.

几十个仆人迎合他所有稀奇古怪的念头。

Dozens of miles of railway track have been torn up

好几十英里的铁轨被毁坏了。

Dozens of reporters camped out on her doorstep.

许多记者在她家门口露宿。

当dozen与具体数字连用时，既不加复数词尾-s，也不后接介词of。当dozen不与具体数字连用，而是表示不确定的泛指数时，则不仅要加复数词尾-s，而且要后接介词of，此时可将dozens of(许多，几十)视为习语。