A body. It explains why the subject was chosen, why the speaker is qualified to address it, why it is appropriate for this audience and why this time is appropriate to discuss it.

它须能解释该发言人为什么选择这个主题，他具备什么样的资格在此发言，为什么适合受众，为什么适合在此时讨论。

youdao

Using your cell phone's speaker or connecting a wired headset— while keeping the handset away from your body — drastically reducesRF exposure.

例如用手机通话时可以使用扬声器或有线耳机，这可以使手机尽量与身体保持距离，大幅度减少辐射。

youdao

I began to familiarise myself with my new body: the grill, the bread bin, the speaker and the spring mechanism.

我开始熟悉自己的新身体：烤盘、面包箱、话筒和弹簧装置。

youdao

In recent months, Somalia has also adopted a provisional constitution, selected members of parliament and appointed that body's speaker.

CNN: Somali lawmakers approve new prime minister

In addition to picking a president, Somalia has adopted a provisional constitution, selected members of parliament and appointed that body's speaker -- all in recent months.

CNN: Somali president appoints prime minister

And the BBC understands House of Commons Commission, a supervisory body chaired by Speaker Michael Martin, will meet on Monday to decide whether to release the details of all MPs' claims early.

BBC: Ministers defend expenses claims