随机评估可以帮助我们了解发展中哪些措施有效,哪些无效。
The more uncertain and insecure I feel, the more I cling to the idea of painting.
【译文】不担心别人不了解自己,就怕自己没有能力。
Efficiency is doing things right; effectiveness is doing the right things.
Every act of communication is a kind of performance.