不可数的

例句：

1. 1. The weather forecast is indefinite, so we should wait and see.
   天气预报不确定，所以我们应该等待并观察。
2. 2.He didn't know the answer to the question, which made him feel indefinite.
   他不知道问题的答案，这让他感到不确定。
3. 3. The situation was indefinite, so they decided to postpone the meeting until further notice.
   情况不确定，所以他们决定推迟会议直到另行通知。