1 . unlikely
不自量力 over-confident不至于unlikely不舍 reluctance
2 . know better than to
... knock down 擊倒 know better than to 不至于know for sure 肯定.
3 . we avoided
we were poor , but we avoided debt ., 我們窮是窮 , 但還不至于背債.
4 . cannotgosofarbeunlikely
漢英詞匯大全第2676頁 ... 不只notonlynotmerely 不至于cannotgosofarbeunlikely 不至于的unapt.