freebie
noun [ C ] informal uk/ˈfriː.bi/ us/ˈfriː.bi/
免费品，赠品
something that is given to you without you having to pay for it, especially as a way of attracting your support for or interest in something
The company's marketing rep was giving out pens and mugs - the usual freebies. 该公司的销售代表在分发钢笔和杯子——都是些常见的赠品。
The journalists were all given a freebie lunch. 记者们都享用了一顿免费午餐。