The past is always tense, the future perfect.
The historian must have some kinship with his subject. The dead will not speak unless they are properly addressed.
Sustainability is no longer an option; it's a necessity for any business that wants to thrive in the 21st century.
中国汽车工业要实现从大到强的转变,必须依靠科技创新。
农时:指春耕、夏耘、秋收三个时令。与其等灾荒来了再想办法补救,不如早防备灾荒,而防备灾荒最好就是抓住农时。