这里的opposing是作adj.对立的 而不是表示反对的意思
Political parties represented （opposing） political interests rather than the general public good.

“直径所对的圆周角为直角

给出的条件都不能得知 到底有多少是占用的去年新建的那230户

230是去年建的 7200是所有的

(1) X市去年年底独户住宅入住率为90%;(2)X市去年年底独户住宅入住率为7200户。

在X市去年兴建的230幢独户住宅中，有多少在年底被占用?

立方体！！！！

|ps – pt|=|p(s – t)|= p|s – t|>p(s-t)

any local adaptations that are present become diluted

there is no reason to suspect that the effect would be qualitatively different than what was seen in the aftermath of the Mount Saint Helens eruption.

The numerical effect is obvious: there are fewer salmon in degraded regions than in pristine ones; however, habitat loss also has the potential to reduce genetic diversity.

在S的前两项之后，S的每一项的值等于前两项的平均值(算术平均值 )the last two preceding terms 前两项

Low levels of straying are crucial, since the process provides a source of novel genes and a mechanism by which a location can be repopulates should the fish there disappear.

差异：医生觉得自己花在病人的时间上不够，但实际上病人在诊室呆的时间变长了。原因就是医生在开处方之前的时间变长了，所以总时长变长，但医生自己认为的花在病人上的时间并没有边长。

Skeptics also argue that the fused clavicles (the "wishbone") of birds differ from the unfused clavicles of theropods.

spreadsheet 电子制表 row行 column列

In corporate purchasing, competitive scrutiny is typically limited to suppliers of items that aredirectly related to end products.

which can inappropriately shelter suppliers from rigorous competitive scrutiny that might afford the purchaser economic leverage. 考的是取反！

Idiom: in recognition of

2的引入使2n有两倍于n的因子，说明2不是n的因子
以及在很纠结的时候要学会举例 从简单开始归纳