Striga is a parasitic weed that africans commonly call witchweed .

striga是一种寄生野草，非洲人通常称其为独脚金。

Such environments channel society 's output towards a parasitic elite , discouraging investment and innovation .

这类环境把社会的产出调拨给一名寄生性的精英，因而阻止了投资和创新。

Dodder is a parasitic plant .

菟丝子是寄生植物。

But the institution itself is parasitic .

然而大学本身是寄生性的。

Democrats crowed that mr romney had written off half the electorate as parasitic loafers .

民主党欢呼说罗姆尼已经把一半的选民说成了寄生的游手好闲者。