Previous attempts at filtering and oxygenating aquarium water had failed.
过去给水族馆的水过滤和充氧的尝试都已失败了。
《柯林斯英汉双解大词典》
2
But bats, we thought they were filtering out this kind of information, because they simply couldn't analyze it.
但至于蝙蝠，我们认为它们过滤掉了这类信息，因为它们根本无法分析这些信息。
3
In fact, we kind of assumed that they were filtering a lot out, the way a sophisticated radar system can ignore echoes from stationary objects on the ground.