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States and the interaction of water with the boat l'interaction entre l'eau et le bateau

顺水推舟, 逆水行舟:
"push the boat in the direction of water flow" (act by taking advantage of circumstances);
"sail boat against the tide" (navigation difficult: if we don ' not advance, it is declining).

水 亦 载 舟, 水 亦 覆舟:
"water can carry the boat to sink as much as (the coexistence of positive and negative).

水涨船高:
"more water increases, the boat goes by backlash" (things go according to their database environment).