跪求！！ tax credit 的意思！！

THE home country may reduce the burden of the joint taxation of foreign subsidiary income in the home country and the host country by granting a tax credit to a parent corporation for income taxes paid in the host country.
这段讲的什么呀！！ 帮忙翻译下！ 不要机器翻译！！！ 是关于tax credit的例子还是解释呀！那 tax credit 是什么意思？？

tax credit 税收抵免

这么解释好了：
外国子公司在中国经营获得了income，在host country（应该指中国）和home country（外国人自己的国家）会重复纳税，因为这一重叠负税会在host country交掉，所以呢，home country会给这家母公司（在home country）给予一项tax credit 减免税收

税务信用度

the term tax credit describes two different concepts: the first is a recognition of partial payment already made towards taxes due. the second is a state benefit paid to employees through the tax system, which has the effect of increasing (rather than reducing) net income.

金山词霸..(授之鱼不如授之以渔..