"Ten minutes to seven o'clock."
I don’t think the team look at these discussion pages – I know they review reports, as occasionally I get a nice email saying that something I suggested as correct is now accepted. So, report this error. Oh, sometimes a poor Internet connection means some bits of audio don’t work. However, in this case it seems to be consistent, so it’s likely an error.
This happens sometimes because of a poor Internet connection. But there are some exercises, of which this is perhaps one, where the sound is missing from one or two characters. Occasionally a character has the wrong pronunciation, for example 识, which has two pronunciations: the male voice uses the incorrect one for the context in which we have landed, the female voice uses the correct one