目前还不清楚到底谁会来执行封锁。

It's not yet clear who will actually enforce the blockade.

《柯林斯英汉双解大词典》

碰撞的原因目前还不清楚。

The cause of the collision was not immediately known.

youdao

目前还不清楚导致这些工人被困在电梯里的具体原因。

Details about what led to the workers, being trapped in the elevator weren't immediately available.

youdao

I really don't know at this point but uh, I don't know.

目前我还不清楚，还没有想好。

哥伦比亚大学的教程 - SpeakingMax英语口语达人