But milk wasn't the early mammals' only secret weapon. 但是母乳并不是 早期哺乳动物唯一的秘密武器
continues to be the secret of their success. 仍然是它们成功的秘诀
It looks like the secret weapon just backfired! 貌似秘密武器适得其反
*But the truth is that I have a secret to tell* *但其实我有个秘密想告诉你*