Unaccustomed a. not used (to sth. ); not usual

（对某物）不习惯的；不寻常的

Well, it's not usual. Shirts are invariably packed in cardboard cartons to save freight cost.

哦，通常不这么做。衬衫一般都用硬纸板箱包装，省运费。

I thought at this Time the Rain felt Cold, and I was something chilly, which I knew was not usual in that Latitude.

我感到这回的雨有点寒意，身子感到有点发冷。我知道，在这个纬度上，这是不常有的事。