水位落差很大。
The drop in water level is big.
drop in elevation; (fig.) gap (in wages, expectations etc); disparity
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
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Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
水位落差很大。
The drop in water level is big.
他心里的落差很大。
He feels a big gap inside.