The practice of clocking in for an eight-hour workday is a leftover from the days of the Industrial Revolution, as reflected in the then-popular saying, Eight hours labor, eight hours recreation, eight hours rest.
出自-2016年12月阅读原文
The practice of clocking in for an eight-hour workday is a leftover from the days of the Industrial Revolution, as reflected in the then-popular saying, "Eight hours labor, eight hours recreation, eight hours rest."
2016年12月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-PLURAL
残羹剩饭；剩菜；吃剩的食物
You can refer to food that has not been eaten after a meal as leftovers .
If you say that something is a leftover from a past period of time, you mean that it has its origin there and still exists even though most other things connected to that time have disappeared.
1. a small part or portion that remains after the main part no longer exists
Adjective
1. not used up;
"leftover meatloaf""she had a little money left over so she went to a movie""some odd dollars left""saved the remaining sandwiches for supper""unexpended provisions"
2. uneaten and saved for eating later;
"leftover food served at a later meal""yesterday's reheated soup"