用者可使用扩音器去录下字句，以便能于每星期练习串字。
You can use a microphone to record words so you can practice your weekly spelling.
对于那些经常用嗓的人，如歌手，职业演讲者，要使用扩音器。
And for people who use their voices a lot, like singers or professional speakers, get voice training and use an amplifier.
因为周围的噪音太大以至于他的正常嗓音不能被人很好的听见，他在每一站都使用扩音器，并且总是号召人们进行救赎。
He USES the megaphone at express stops, where the noise is too great for his voice to be heard ordinarily, and calls for redemption.
传统播音系统使用的大型扩音器中的椎体振动较为缓慢，使声音更加适合人类听觉范围。
The cones of larger loudspeakers used in traditional public-address systems vibrate more slowly, making them better suited for sounds in the range of human hearing.
布莱克博士与戴维斯都承认他们本人各有两台手机，但在耳机与扩音器的使用上相当慎重，并只在信号良好的的地方打电话。
Both Dr. Black and Davis admitted that they still own two cell phones each, but are careful to use a headset or speakerphone, and only make calls in areas with good reception.
扩音器可以让操纵者告诉游泳者哪些区域有危险，让落水者保持镇定以及告诉他们如何更好的使用EMILY。
The loudspeaker will enable the operator to warn swimmers of danger zones, calm them down and instruct them how best to use EMILY.
减少与手机接触的最有效方法是使用手机的扩音器、有线耳机或耳麦。
Short of not using a cellphone, the lowest exposure would come from using the speaker phone or a wired headset or ear buds.
百老汇剧院的拥有者，各大体育联赛和其他使用电子扩音器的人都持同样的意见，因为电子扩音器使用相同的波段。
That view is Shared by Broadway theater owners, sports leagues and others that use electronic microphones, which use the same airwaves.
扩音器于20世纪开始被广泛使用，而著名的彩球手摇花也于20世纪50年代被劳伦斯•何其莫用到啦啦队当中。
Widespread use of the megaphone started in the 1900's and the famous pom pon was introduced in the 1950's by Lawrence Herkimer.
这款由松下公司研发的扩音器可以将使用者说的日语复述成英语，韩语或者中文。
The megaphone, which has been unveiled by Panasonic , allows the user to speak in Japanese before it then repeats the phrase in either English, Korean, or Chinese.
松下公司发布的这款扩音器，能够将使用者所说的日语内容以英语、韩语或者汉语的形式重复播放。 。
Thee megaphone, which has been unveiled byPanasonic, allows the user to speak in Japanesebefore it then repeats the phrase in either English, Korean, or Chinese.
李在霍格沃茨学校是魁地奇比赛的解说员，他使用魔法扩音器把声音传遍全场。
Lee commentated the Quidditch matches at Hogwarts, using a magical megaphone to make his voice heard all over the stadium.
扩音器的设计和使用高品质低噪音元件确保信号的反应是明确和清晰的，没有额外的嗡嗡声的干扰。
The design of the amplifier and the use of high-quality low noise components ensure the signal response is clear and crisp, without the added background hum of some boosters.
扩音器的设计和使用高品质低噪音元件确保信号的反应是明确和清晰的，没有额外的嗡嗡声的干扰。
The design of the amplifier and the use of high-quality low noise components ensure the signal response is clear and crisp, without the added background hum of some boosters.
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