offhanded

1.Trust is as difficult a coin to earn and it is easily lost - the trust built over a decade can be shattered in an instant by one offhanded remark or deed.

信任就像一个钱币很难争取到，也很容易失去-超过十年所建立信任，能在短短一刹那，被一件小事或粗心言语所破灭。