Practical arithmetic
[经] 实用算术, 商业算术
🧩 词语组成解析
practical
['præktɪkl]
adj. 实践的，实际的;可实现的，实用的;注重实际的;可用的;
pr=pre提前+act行动，做+ical...的→pract实践+ical...的→实践的；实用的
🗣️ 情景例句
For goodness' sake, Pete, tell us!
天啊， Pete， 快告诉我们
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
but as a special favour, he would let me have it for $30.
作为特别优惠，他愿意让我出30英镑成交。