Question

they may have a hard time getting accustomed to the shabby housing and primitive facilities and sla

they may have a hard time getting accustomed to the shabby housing and primitive facilities and slack off at work。关于slack off。我查了一下slack的词性有名词和形容词两种。这里是名词 加 off 组成介词短语吧

Answer 1

这里的 slack 既非名词也非形容词，而是动词；off 是副词，整个 slack off 短语表示“松劲, 放松, 怠工, 敷衍了事”是与 have a hard time 并列的谓语动词。
整个句子意思应该是：他们在逐渐习惯破旧的住宅和简陋的设备过程中或许艰难度日并且在工作中敷衍了事。

Answer 2

这里是动词 加 off 组成介词短语吧