1. 我算是打了败仗了，真叫人痛心切齿。 Well, i was smarting under a sense of defeat
2. 因为那时打不得败仗，一败就不可收拾。我算是打了败仗了，真叫人痛心切齿。 That was because we could not afford to lose one, or our situation would be hopeless. Well, I was smarting under a sense of defeat.