Definition
It is not yet possible to know or be certain about something.
尚未可知
It remains to be seen whether this new policy will be successful.
目前還不清楚這項新政策是否會成功。
It remains to be seen if they can finish this project on time.
他們能否按時完成這個專案還有待觀察。
It remains to be seen if the new product will be successful in the market.
新產品在市場上是否會成功還有待觀察。