那个富有的亲戚过着寄生虫般的生活，从不工作，只靠别人的金钱过活。

The wealthy relative lived a ___parasitical existence, never working and surviving solely on others' money.

这种寄生植物依附在树上吸收养分。

The ___parasitical plant clings to the tree and absorbs nutrients from it.