There is heavy note of hypocrisy in this, a case of closing the barn door after the horses have escaped—with the educated themselves riding on them.
这种说法带有浓重的虚伪色彩，就像马跑了再关上马厩的门一样——而骑在马背上的是受过良好教育的人。
2
He left the door ajar in case I needed him.
他微开着门以便我找他。
《柯林斯英汉双解大词典》
3
I take the smallest possible knapsack, containing a map, a notebook, money, a pen, a pencil in case the pen lets me down, plasters for blisters, my door-keys.