This type of trap uses no bait or other attractant.

这种陷阱不用诱饵或其他引诱物。

《牛津词典》

A trap was laid, with fresh bait.

陷阱设置好，还投放了新诱饵。

《牛津词典》

Takken's group, meanwhile, has developed a tool that could help shed more light on the discovery: a trap that USES human or animal scents as bait and that is more efficient than current methods.

与此同时，Takken的队伍发明了一种可以使这个发现得到进一步研究的工具：一种用人类或动物血作为诱饵的陷阱，这个陷阱比所有其他的方法都有效。

youdao

"We basically bait, trap and kill, " he said of the status quo.

WSJ: MTA Sets New Tactic in Rat War

If, as his post-Vietnam record suggests, this amounts to a bait-and-switch trap for American voters, it is understandable that he would object to close scrutiny of the bait.

CENTERFORSECURITYPOLICY: Kerry's bait-and-switch

We will release every vulture that's in that trap today and re-bait it in preparations for Tuesday's attempt.

NPR: NASA Sets New Discovery Launch Date for July 4