| Subject | English | Russian |
| gen. | at the cusp | на рубеже (веков – between Tamerlane) |
| gen. | at the cusp between | на рубеже (At the cusp between the 18th and 19th centuries, enslaved Haitians emancipated themselves in a revolution from their French owners...; journalist and MP who lived at the cusp between the 18th and 19th Centuries – and also edited several volumes of Cobbett's writings Maria Klavdieva) |
| gen. | at the cusp of | на пороге (We are at the cusp of turning the impossible into reality Tamerlane) |