基本解释不知做什么好 闲着无事 无所事事同根派生 英汉例句双语例句Not wanting to be left at a loose end, the retired worker volunteered to repair shoes for the neighbourhood.那位退休工人不愿在家闲着，自愿在街道上帮助补鞋。dict.cn英英字典剑桥英英字典to have nothing to do