Some 450,000 flood-damaged projects had been restored. About 30,000 kilometers of dykes and dams were reinforced,and 47,000 kilometers of waterways were dredged.是什么意思_Some 450,000 flood-damaged projects had been restored. About 30,000 kilometers of dykes and dams were reinforced,and 47,000 kilometers of waterways were dredged.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句