税法源泉扣缴英文究竟是什么.withholding source

问题描述:

税法源泉扣缴英文究竟是什么.withholding source
税法源泉扣缴英文是withholding by source 还是withholding at source,或withholding at the source ,辅导老师说我用at 错的,是国人的习惯,应用by source ,而且如果source使用中也是at the source,我查了些资料,很多英文上书上都是用at source,我有些困惑,

at source :at the place where something comes from
eg.Tax is deducted from my income at source.
太专业的我也不懂,个人感觉是at source