This is the 755th most frequent Chinese word.
尚未
"Not yet."
The phrase '尚未' is used here to express that the action of completing the homework has not been accomplished as of the current moment.
他尚未完成作业。
He has not yet finished his homework.
Here, '尚未' indicates the currently lacking prevalence or adoption of the technology in question.
这项技术尚未广泛应用。
This technology has not yet been widely applied.
In this case, '尚未' is employed to demonstrate that the decision-making process regarding the trip's date is still pending.