He used a microphone so that everyone could hear him.
"他使用扩音
,使人人都能听见他的讲
。"
, 
风筒；无线传
风He used a microphone so that everyone could hear him.
"他使用扩音,使人人都能听见他的讲。"
The singer used a microphone so that every one in the hall could hear him.
歌手用
风, 以便大厅里的每一个人都能听得见。
He gave a tap at the microphone before speaking.
他在讲前先轻叩一下扩音。
The microphone converts acoustic waves to electrical singals for transmission.
风将波转化成电信号进行传播。
She behaved naturally before the microphone.
她在筒前表现自然。
Cameras and microphones at the ready, they waited for the new President to appear.
摄影机和风都已就位，就等新总统出现。
His accident with the microphone brought some welcome comic relief to a very dull party.
他撞上风, 这给极沉闷的聚会带来些欢乐。
"Meanwhile, a microphone, which was lowered into the mine two hours ago, has enabled the men to keep in touch with the closest relatives."
"与此同时,两小时前放进去一只风,使这些人能与他们最亲近的亲属保持联系。"
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