我们都知道油脂变质后会发臭。We all know that fats spoil by becoming rancid.有些生物会导致食物变质并引起食物中毒。Some organisms are responsible for spoiling food and cause food poisoning.他们买了太多牛肉，有些都变质了。They bought so much beef that some went bad....
Pat was a tower of strength to our whole family.帕特是我们全家人的主心骨。Pat refused to give her any information about Sarah.帕特拒绝向她提供任何关于萨拉的消息。If you do something well, give yourself a pat on the back.事情做得漂亮时，给自己一点表扬。...
Instead of writing her shorthand by hand, she could use a machine.她可以不用手, 而使用一种带键盘的机器进行速记。"Third World" is an abstraction, a form of shorthand.“第三世界”是个抽象概念，是一种简称。The fiction that 'he' is a neutral shorthand for...