1.roll back 降低
One provision of the law was to roll back taxes to the 1975 level.
该法律的规定之一便是将税收降低到1975年的水平[uCmN^,7o-fd&dja*!。

2.national and international 国内外
The company had very strong marketing ability on a national and international basis in the carpet field.
公司在国内外均有很强的毡毯行销能力A8Ij|3Fo];rr。

3.bring home to sb. sth. 让某人明白
Copernicus said, "We should bring home to them the earth is round. "
哥白尼说，“我们应该让他们明白，地球是圆的jgJnY1fBsKZ。”

4.barely begin to 只稍微……
Words barely begin to describe my gratitude toward our alumni and friends who understand the need for supporting students affected by cancer.
对于理解我们有必要帮助那些受癌症影响的同学这点的校友和朋友，我对他们的感激之情难以用言语表达FVcNz[NbAuQoNCpY。