unclear
adj. 不清楚的；不易了解的
例句
Your diagrams are unclear.
你的图表不清楚。
《牛津词典》
His motives are unclear.
他的用意不明。
He is still unclear about his own future.
他对自己的未来仍不清楚。
《柯林斯英汉双解大词典》
