是印度给了我们表达所有数字的巧妙方法,每个符号都有一个位置值和一个绝对值。
It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.
Existence is a risk, but non-existence is also a risk.
The truth is you don't know what is going to happen tomorrow. Life is a crazy ride, and nothing is guaranteed.
世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。