We usually clear the water with a filter. 我们通常用过滤器使水净化。
You must select at least one filter action. 您必须选择至少一个过滤器动作。
By replacing your air filter annually, or biannually if you live in a dusty area, you'll ensure the engine can breathe freely. 每年换一次过滤器或者在沙尘多的地方每半年更换一次能保证你的爱车引擎自由呼吸。
