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| English | Russian |
| become fertile | оплодотворяться |
| become fertile | тучнеть |
| become fertile | оплодотворяться (impf of оплодотвориться) |
| become fertile | потучнеть |
| of soil become fertile | тучнеть |
| become fertile | оплодотвориться |
| become more fertile | утучняться (due to application of fertilizers) |
| become more fertile | утучниться (due to application of fertilizers) |