adj.不肯定的；不确定的；没有自信的
Consult your dictionary when you are unsure of your spelling. 当你不敢肯定拼写时,就查阅一下词典。
He was unsure of what to do next. 他对下一步该做什么犹豫不定。
If you are unsure about what to pick, click here. 如果您不确定应该选择哪个选项，请单击此处。
Matteo Brighi admits he's unsure of his future at Rome. 布里吉承认他不确定他在罗马的未来。
