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reciprocal/
rɪˈsɪprəkəl
/
1.adjective
相互的，互助的，互惠的
At the far end of the room the object of his attention was exhibiting a reciprocal interest.
在房间的那头，吸引他注意的女孩也表露对他的兴趣。
2.adjective [Mathematics]
乘法逆运算的，乘法逆元素的；倒数的
The reciprocal ratio is used for the time being.
现今一直在使用反比。
The reciprocal ratio of a:b is b:a.
a:b 的反比是 b:a。
3.noun[c]
相对的事物，相应而相反的事物，相互作用的事物
Poverty is the reciprocal of wealth.
穷富是相对而言的。
Risk is the reciprocal of safety.
风险是安全的反义词。
4.noun[c] [Mathematics]
倒数
Another useful property of triangular matrices is the ease with which their reciprocals may be calculated.
三角矩阵另一个有用的特性是容易用他们的倒数计算出来。
5.noun [Botany]
正反交，正逆配种