1.Let's "pig" out.我们大吃一顿吧 2.I smell a "rat".我觉得有蹊跷 3.You're "chicken".你这胆小鬼 4.A "leopard" doesn't change its spots.本性难移 5.How could I ever trust that "snake"?你要我怎么相信他? 6.I don't want that "monkey" on my back.我不想有负担。