雨水会慢慢渗透过土壤进入地下水层。
Rainwater will slowly ___percolate through the soil into the groundwater.
这个新理念逐渐在社区中传播开来。
The new idea slowly ___percolated through the community.
雨水慢慢渗入土壤。
Rainwater ___percolates slowly into the soil.
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