of no use的意思

汉语翻译

例句：

1. It is of no use boasting of being rich on a desert island.在无人岛上夸耀富有也是白费力气。
2. It is of no use to talk to him; he is as deaf as a post.跟他说话毫无用处，因为他一点也听见。
3. Lacking worth; of no use or value.无价值的不值得的; 无用的或无价值的