... 机会成本 opportunity costs 机会取样opportunity sampling 补习学校(美) opportunity school ...
双语例句
1
Mock exams offer a good sampling of the kinds of questions you'll encounter and give you the opportunity to resolve them on your own time.
模拟考试提供了您将遇到的各种题目的很好的样本,并且使您有机会在自己的时间里解答这些题目。
2
CBBC is not just a shopping venue, but also an excellent opportunity for brand awareness, new product launches, sampling, promotions and marketing activities.