The voice you'll hear is a sign language interpreter.

你会听到一个手语翻译的声音。

All of those people come together to ensure that the angle you've mentioned real, you know, sign language interpreters.

所有这些人聚集在一起，确保了你提到方面：手语翻译。

He needed a sign language interpreter for every meeting, but it was a huge effort to coordinate.

他每次开会都需要一名手语译员，但协调起来很费力。

The South African government has denied the controversial sign language interpreter at Nelson Mandela's memorial service has caused a security risk or that the affair was an embarrassment for the government.

南非政府否认在纳尔逊·曼德拉葬礼上出现的有争议的手语翻译引发安全问题，也不认为这件事令政府尴尬。