leach

• 通过液体使固体物质中的可溶成分溶解并分离出来的过程，常用于提取有用物质或去除杂质。

The process of leaching, typically involving the removal of soluble substances from a solid by percolating liquid through it.

不可数

1. Leaching processC1formal

   The process by which soluble substances are washed out of soil, ore, or other material by the action of a percolating liquid.

   淋滤

   • The leach of minerals from the soil can affect plant growth.
   • Acid rain accelerates the leach of nutrients from the ground.
   • The leach of chemicals into the water supply is a major concern.

   同义词leachingpercolation

• 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