2ADJ-GRADED [verb-link ADJ, ADJas to wh/n, ADJ wh]不明白的;不清楚的;不确定的 If you are unclear about something, you do not understand it properly or are not sure about it. 不明白的;不清楚的;不确定的
He is still unclear about his own future. [+ about]
他仍然不清楚自己的将来会怎样。
Experts remain unclear as to why the danger appears to have been steadily increasing.