There was some hand-waving in the last argument, because it was fairly straightforward.
对于这个问题，这里有一些图示，它们相当直观。
2
Sit back with a smile as you watch as one hand-waving conversationalist provoke mirror reactions in another.
当你看到一位手舞足蹈的健谈的人，就会微笑着停下来看着他，这也是激发了另一个人的镜像反应。
3
Outsiders had to take it on trust that all the Shouting and hand-waving by men in brightly coloured jackets meant they were paying, or being paid, a fair price.