每年的二至点和二分点总会发生一些变化因为地球正改变着相对于绕日轨道面的自转轴角度。

From year to year, there is always some variability in the equinoxes and solstices because of the way Earth's changing tilt matches up with its orbit around the sun.

youdao

日地系统的另一个特点是二分点和二至点沿轨道逐渐运动。

Another characteristic of the sun-earth system is the gradual procession of the equinoxes and solstices along the orbit.

youdao

In binary search-- ah, there's that wonderful phrase, this is called a version of binary search just like you saw bin-- or bi-section methods, - when we were doing numerical things- in binary search, I need to keep track of the starting point and the ending point of the list I'm looking at.

就是当我们处理数字的时候，所称的二分检索，在二分法搜索中,我需要记录区间的开始点和尾点，初始化的时候就是-,问题输入的开始点和尾点，当我开始做测试的时候,我想要做的就是去取中值点。

麻省理工公开课 - 计算机科学及编程导论课程节选