But, of course, many of you communicate in English on the telephone, so it is good practice to hear a recording like this.

但是，当然，你们中的许多人在电话中用英语交流，所以听这样的录音是很好的练习。

It is good practice to watch out for these transition devices when listening to someone talk. They'll help you follow an argument more clearly.

听别人说话时注意这些过渡设备是一种很好的做法。它们会帮助您更清楚地理解论点。