unichassis

例句：

1. 1. The results of the experiment are still uncertain.
   实验的结果仍然不确定。
2. 2. The decision is undecided until further notice.
   直到另行通知前，这个决定还未确定。
3. 3. The identity of the culprit remains unknown.
   罪犯的身份仍然未知。