1) The flood is sinking.
洪水正在消退。
2) The floods are going down.
洪水正在退去。
3) The tide was running out.
潮水正在消退。
4) the gradual recession of flood waters
洪水的逐渐消退.
5) The flood gradually subsided.
洪水正逐渐退去。
6) The swelling was going down！
肿胀正在消退！
补充资料：潮水
1.海洋及沿海江河中受潮汐影响而定期涨落的水流。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条