transitive. to harden off: to acclimatize (a plant) to cold or outdoor conditions by gradually reducing the temperature of a greenhouse, cold frame…
| 单词 | θ53566 |
| 释义 | the world > food and drink > farming > gardening > management of plants > [verb (transitive)] > harden off (2) to harden off1827 transitive. to harden off: to acclimatize (a plant) to cold or outdoor conditions by gradually reducing the temperature of a greenhouse, cold frame… harden1852 Of a (usually immaterial) thing. Frequently with into. transitive. To make (something) more severe, rigorous, or clearly defined; to cause to… |
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