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| Subject | English | Russian |
| gen. | keep a sharp eye | внимательно наблюдать (за; on ART Vancouver) |
| gen. | Keep a sharp eye | смотреть в оба (out for/on Artjaazz) |
| idiom. | keep a sharp eye on | зорко следить за (It seems that vandals marking their names or other messages on the rock don't get to appreciate their names for long; city staffers keep a sharp eye on the famous landmark, and the instant anyone soils its pristine whiteness, it is immediately repainted. (Chuck Davis) ART Vancouver) |
| gen. | keep a sharp eye on someone all the time | не спускать глаз с кого-либо ни на секунду (linton) |