释义 |
underdrainenUK
underdrain n (Agriculture) a drain buried below agricultural land vb (Agriculture) to bury such drains below (agricultural land) ˈunderˌdrainage nunderdrain Past participle: underdrained Gerund: underdraining
Imperative |
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underdrain | underdrain |
Present |
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I underdrain | you underdrain | he/she/it underdrains | we underdrain | you underdrain | they underdrain |
Preterite |
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I underdrained | you underdrained | he/she/it underdrained | we underdrained | you underdrained | they underdrained |
Present Continuous |
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I am underdraining | you are underdraining | he/she/it is underdraining | we are underdraining | you are underdraining | they are underdraining |
Present Perfect |
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I have underdrained | you have underdrained | he/she/it has underdrained | we have underdrained | you have underdrained | they have underdrained |
Past Continuous |
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I was underdraining | you were underdraining | he/she/it was underdraining | we were underdraining | you were underdraining | they were underdraining |
Past Perfect |
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I had underdrained | you had underdrained | he/she/it had underdrained | we had underdrained | you had underdrained | they had underdrained |
Future |
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I will underdrain | you will underdrain | he/she/it will underdrain | we will underdrain | you will underdrain | they will underdrain |
Future Perfect |
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I will have underdrained | you will have underdrained | he/she/it will have underdrained | we will have underdrained | you will have underdrained | they will have underdrained |
Future Continuous |
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I will be underdraining | you will be underdraining | he/she/it will be underdraining | we will be underdraining | you will be underdraining | they will be underdraining |
Present Perfect Continuous |
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I have been underdraining | you have been underdraining | he/she/it has been underdraining | we have been underdraining | you have been underdraining | they have been underdraining |
Future Perfect Continuous |
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I will have been underdraining | you will have been underdraining | he/she/it will have been underdraining | we will have been underdraining | you will have been underdraining | they will have been underdraining |
Past Perfect Continuous |
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I had been underdraining | you had been underdraining | he/she/it had been underdraining | we had been underdraining | you had been underdraining | they had been underdraining |
Conditional |
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I would underdrain | you would underdrain | he/she/it would underdrain | we would underdrain | you would underdrain | they would underdrain |
Past Conditional |
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I would have underdrained | you would have underdrained | he/she/it would have underdrained | we would have underdrained | you would have underdrained | they would have underdrained |
underdrainenUK
underdrain[′ən·dər‚drān] (civil engineering) A subsurface drain with holes into which water flows when the water table reaches the drain level. underdrain underdrain A drain, installed in porous fill, for drawing off surface water or water from the soil, as under the slab of a structure. |