To be natural is such a very difficult pose to keep.
文化是一个群体在解决外部适应和内部整合问题的过程中逐渐习得的东西。
A shortage is a sign that somebody is keeping the price artificially lower than it would be if supply and demand were allowed to operate freely.
A writer must be a witness to his or her time, must bear witness to the injustices and the sufferings of the world.