leaching

• 指液体渗过固体材料（如土壤或矿石）时将其中可溶性物质溶解并带走的过程，也指通过溶剂提取物质的过程。

A noun referring to the process by which soluble substances are removed from a solid material, such as soil or ore, by the action of a percolating liquid.

不可数

1. Process of extractionB2formalscientific

   The process by which soluble substances are removed from a solid material by the action of a liquid passing through it.

   浸出过程

   • The leaching of minerals from the soil can reduce its fertility.
   • Acid rain accelerates the leaching of nutrients from plant leaves.
   • In mining, leaching is used to extract metals from ore.

   同义词dissolutionelutionextraction

• 指液体透过可渗透物质渗滤，并溶解带走其中的可溶成分；也引申指逐渐消耗或去除某物。

A verb used to describe the process of a liquid percolating through a permeable substance, extracting soluble components; also used figuratively to mean draining or removing something gradually.

1. Percolate or drainB2formalscientific

   To cause a liquid to pass through a porous material or soil, often to extract soluble components.

   沥滤

   • Rainwater leaches minerals from the soil.
   • The chemicals leached into the groundwater over time.
   • Farmers must be careful not to let fertilizers leach into nearby streams.

   同义词drainfilterpercolateseepstrain

2. Permeate graduallyC1formalscientific

   To slowly pass through or spread into a substance or area.

   渗滤

   • The dye leached through the fabric, creating a tie-dye effect.
   • Toxic waste can leach into the surrounding environment for decades.
   • The solution leached through the filter paper.

   同义词filterinfiltrateoozepenetratepercolatepermeateseeptrickle

3. Extract by percolationC1formalscientific

   To remove soluble substances from a solid material by passing a liquid through it.

   沥滤

   • The process leaches the salt from the seaweed.
   • They leach the ore to extract the valuable metals.
   • The soil was leached of its nutrients after heavy rains.

   同义词drainextractfilterpercolate