Polycom speaker phone: maybe two (if a large room).
带有扬声器的无线话筒：如果是大房间的话，也许需要两个。
I can still remember my first phone call with a native speaker.
我还记得我第一次跟母语是英语的人通话的情景。
Don't use a speaker phone unless absolutely necessary.
若非必要，不要使用电话的免提功能。
He is also a regular speaker at technology conferences on the subject of phone fraud.
他还经常在科技大会上就电话欺诈主题发言。
Everybody has to have a speaker phone.
人人得有个免提电话。
Use a shoulder rest receiver, speaker phone, or headset.
使用肩部来固定收话器，扬声器电话或头戴送受话器。
Can conference call phone in room doesn't have speaker phone.
可以召开电话会议房间内没有对讲电话。
Loud back speaker and in phone call.
扬声器和大声回电话。
Loud back speaker and in phone call.
扬声器和大声回电话。
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