我们可以在网上便宜地买到这些书。

We can buy these books ___cheaply online.

这些玩具制作得很廉价，玩了几次就坏掉了。

These toys were made ___cheaply and broke after just a few uses.

他通过抄袭他人作品轻易获得了名声。

He gained fame ___cheaply by plagiarizing others' work.