n.blank space; gap; (of layout of a page, book or painting) margin
His book filled a major gap.
Suddenly my mind went blank.
We think we've identified a gap in the market.
adj.blank; not used yet
He handed in his blank book.
This is a blank warrant of appointment.
We should leave a blank space between the two sections.
- "空白" is often matched with measure word "块".