dirt cheap

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˌdirt ˈcheap adjective, adverb informal  CHEAPextremely cheap or cheaply 极便宜的[地] Such cheap goods obviously rely on dirt cheap labor. 这么便宜的商品显然是依靠极廉价的劳动力。 I got these shoes dirt cheap. 这双鞋我买得便宜极了。

ˌdirt ˈcheap adjectiveChineseSyllable  

dirt cheap
ˌdirt ˈcheap adjective, adverb informal
extremely cheap or cheaply:
    Such cheap goods obviously rely on dirt cheap labor.
    I got these shoes dirt cheap.

dirt cheapBrE /ˌdɜːt ˈtʃiːp/ 🔊NAmE /ˌdɜːrt ˈtʃiːp/ 🔊 adjective, adverb (informal) very cheap 非常便宜（的）◆It was dirt cheap. 这太便宜了。🔊🔊◆I got it dirt cheap. 我买得非常便宜。🔊🔊