an air / oil filter
空气过滤器；滤油器
英语解释：a device containing paper, sand, chemicals, etc. that a liquid or gas is passed through in order to remove any materials that are not wanted 滤器；过滤器:
注：一词多义，单词一次只记一种意思即可。
,
an air / oil filter
空气过滤器；滤油器
英语解释：a device containing paper, sand, chemicals, etc. that a liquid or gas is passed through in order to remove any materials that are not wanted 滤器；过滤器:
注：一词多义，单词一次只记一种意思即可。
,
