您要查找的是不是：
- Hum the opening bars of your favourite tune. 哼一哼你喜爱的曲子的开头几个小节。
- She continued to hum the song over and over. 她一遍又一遍地不断哼唱那支歌。
- He could hear the hum of the bees in the garden. 他听得见花园里蜜蜂的嗡嗡声。
- The only sound he heard was the hum of the machine. 他听到的唯一的声音就是那台机器的嗡嗡声。
- You need to filter the drinking water. 你需要把饮用水过滤。
- A filter traps dust from the air. 过滤网可存住空气中的尘埃。
- The news of the defeat started to filter through. 战败的消息开始传出来。
- It won't take long to filter the coffee. 用不了多少时间就可以把咖啡过滤好。
- I took this picture with a red filter. 这张照片我是用红色滤光镜拍摄的。
- Bees sip honey from flowers and hum their thanks when they leave. 蜜蜂从花中啜蜜，离开时营营地道谢。
- Charles makes things hum around that office. He's an excellent administrator. 查尔斯使那个办公室的气氛很活跃。他是个出色的行政人员。
- We usually clear the water with a filter. 我们通常用过滤器使水净化。
- Things are starting to hum with activity. 气氛变得活跃起来。
- All around was a drowsy hum of insects. 到处是一片小虫的催眠似的嗡嗡声。
- Put the coffee in the filter and let the water run through. 把咖啡倒入滤器里让水流过。
- He can hear the hum of the bee in the garden. 他听得见花园里蜜蜂的嗡嗡声。
- The filter cleans the fuel before it enters the engine. 在燃料进入发动机之前，过滤器先把它过滤。
- The air of the ball began to hum. 舞会的气氛开始活跃起来了。
- Layered gravel and charcoal to make a filter. 将砂砾和木炭分层以做成过滤器
- We hear the hum of conversation from the next room. 我们听到隔壁房间嗡嗡的谈话声。
