The decision they made is a lamentable lack of foresight.
他们做的决定实在缺乏远见。
His death is a lamentable loss of our work.
他的死对我们的工作来说是令人悲痛的损失。
lamentable详细解释
la.men.ta.ble adj.(形容词)Inspiring or deserving of lament or regret; deplorable or pitiable.See Synonyms at pathetic 不幸的:引发或值得哀痛或后悔的;悲惨的或可悲的参见 pathetic 【引伸】 lam.entably adv.(副词)