Oral communication is fast-moving and impermanent.

口头交流是即时、短暂的。

So Deepa and Grace to the challenges of what a negotiation has in terms of oral communication.

所以，迪帕和格蕾丝谈到了谈判中口头交流的挑战。

Its aims are to stimulate oral communication, reading for pleasure and to enrich thinking and expression.

其目的是促进口语交流、阅读乐趣以及丰富思维和表达。

Many people tell me that after they've really focused on the oral communication parts of what I teach that they see direct benefit in their writing.

许多人告诉我，在他们真正专注于我所教内容的口头交流部分之后，他们看到了写作的直接好处。

Doc. Mayer's listeners are not unusual. When new or difficult material is presented, almost all listeners are faced with a challenge because human speech lacks the stability and permanence of the printed word. Oral communication is fast-moving and impermanent.

玛雅医生的听众都是正常人。当面对新资料或难度较大的资料时，几乎所有的听众都会面临挑战，因为人类口语缺乏书面文字的稳定性和永久性。口头交流速度快，持续时间短。

And there was a very well developed tradition of oral communication and oral transmission where you'd pass down the sayings of a wise figure very accurately, and if you got it wrong, people would correct you.

那时，口头授受的传统已经相当完善，可以十分准确地记录智者的言论，且如果你的记述有误，人们就会纠正你。