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Ditches and drainages should be dredged regularly .

沟渠和排水道要定期疏浚。

But 900km will have to be dredged to make the river fully navigable , which would quintuple its shipping capacity .

但是900公里的路途必须要疏浚来使河流保持完全可通行状态，这将使它现在的通航容量提高5倍。

A few ponds have been dredged and footpaths levelled under the make-work scheme , but nothing on the scale of the kailashpur road .

在工作计划中，几个池塘已经被疏浚过，小路被弄平整过，但是没有kailashpur的路况那么好。

Article 16 drainage ditches should be covered up and dredged regularly .

第十六条排水沟渠应该加盖，并且要定期疏浚。

He dredged up vague memories .

他模模糊糊地回忆起往事来。