排灌的英文：
irrigation and drainage

參考例句：
  • "The best rice land is level, conveniently diked for alternating irrigation and drainage. "
    稻田最好是在平地上，筑田埂以利排灌。
  • (Design, operation and maintenance of irrigation and drainage systems: The service approach)
    7、從服務(wù)角度看排灌系統(tǒng)的設(shè)計(jì)、運(yùn)行與維護(hù)
irrigation是什么意思：
n. 灌溉；沖洗（法）
  • The rotary agitator irrigated him.
    旋轉(zhuǎn)的鼓動(dòng)者可灌溉的他。
  • The farmer is irrigating in his field.
    那個(gè)農(nóng)夫正在田里灌溉。
  • The terrace channels are convenient for irrigation.
    梯田的溝渠便于灌溉。
  • What is the irrigation norm?
    灌溉定額是多少？
  • through the growing season by furrow irrigation
    在整個(gè)生長(zhǎng)期間用畦灌法
drainage是什么意思：
n. 排水；放水；排水系統(tǒng)；污水
  • This is a drainage area.
    這里是排水區(qū)。
  • Keep the drainage channel clear.
    保持下水道暢通。
  • The defect in the drainage must be remedied.
    這排水系統(tǒng)的缺陷該設(shè)法補(bǔ)救。
  • drainage usually has to be undertaken as a first operation
    第一步通常采取排水措施。
  • Pancreatic abscess obviously requires drainage.
    胰腺膿腫顯然需要引流。

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