canAccept：其作用像一个过滤器，决定该规则是否可以接受资源元素。
CanAccept: ACTS like a filter to determine if this rule can accept this source element.
液压系统中过滤器作用是维持流体的清洁度。
T he function of filters in a hydraulic system is to maintain fluid cleanliness.
中层管理人员就像一个过滤器，作用十分重要。
只是一些过滤器用于给出在光的作用。
破坏而导致水过滤器失去作用，使杂质进入换热器。
Failure water filter lose their effect, and make impurities in heat exchanger.
破坏而导致水过滤器失去作用，使杂质进入换热器。
Failure water filter lose their effect, and make impurities in heat exchanger.
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