今天考完试，好多小伙伴纠结proposal没看懂，说自己写成了策划书，没问题的呀！proposal就是议案、提案的意思啊，不要为了有人说的“建议信”这个字眼而纠结，建议书本质上就是策划书啊。查查英英词典或者双语词典就知道了。比如：柯林斯词典上的解释——

1. A proposal is a plan or an idea, often a formal or written one, which is suggested for people to think about and decide upon. (常为正式书面的) 提议

• The president is to put forward new proposals for resolving the country's constitutional crisis.

总统将提出解决国家宪法危机的新议案。

• ...the governor's proposal to restrict cigarette sales.

…州长关于限制香烟销售的提案。

2. A proposal is the act of asking someone to marry you. 求婚

• After a three-weekend courtship, Pam accepted Randy's proposal of marriage.

经过一段为期3个周末的恋爱，帕姆接受了兰迪的求婚。