The past is always tense, the future perfect.
过去总是紧张的,未来是完美的。
"Light is the language of painting, shadows are its punctuation."
There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.
好的研究关键不仅在于方法,还在于问题的清晰性和数据的质量。