The trend is your friend.
粮食是百姓生存的根本,没有粮食人就无法生存。三天不吃粮食,父子之间也难以互相照顾。
相对论不仅是一项科学成就,更是一种关于空间和时间的新思维方式。
The best detective stories are those where the detective is as complex as the crime.