filter out的意思？

Filter out all the dirt before using the water.在用水以前先将其中不清洁的东西过滤掉.We must filter out the dirt.我们必须滤除尘垢.Such questions help him filter out and listen for significant information.这些问题帮助他滤出,并听取了重要资料....

filter out的音标：filter out的英式发音音标为：['filtə aut]filter out的美式发音音标为：['fɪltɚ aʊt]...