1.扩积极词汇
nuance
a very slight difference in meaning, sound, colour or sb's feelings that is not usually very obvious
He watched her face intently to catch every nuance of expression.
We need to be able to perceive the subtle nuances of meaning of each word.
The crux of a problem or argument is the most important or difficult part of it which affects everything else.
the crux of the matter was how we regard it.
If there is parity between two things, they are equal.
Women have yet to achieve occupational parity in many fields...
2.早起
行动不够迅速
3.运动
今晚操场上竟然有人在唱歌……
4.新习惯
积累词条10个ing
5.TED
it is not an art to be mastered, but just a tool to use to get the result.