的意思 unable

1. I am unable to attend the meeting tomorrow due to a prior commitment.
我因为之前的安排无法参加明天的会议。

2. The machine is unable to function properly without the necessary maintenance.
如果没有必要的维护，这台机器无法正常运行。

3. I am unable to find my keys anywhere, I think I may have lost them.
我找不到我的钥匙，我觉得可能是我弄丢了。

4. She was unable to finish her homework on time because she was sick.
她因为生病无法按时完成作业。

5. The company was unable to meet its sales targets for the quarter.
公司无法达到本季度的销售目标。

6. Despite his best efforts, he was unable to persuade her to change her mind.
尽管他尽了最大的努力，但他无法说服她改变主意。