mass noun
1- the expression of approval or agreement赞成, 同意：
a loud murmur of assent
表示赞同的低语
he nodded assent.
他点头同意。
1.1
- official agreement or sanction同意, 批准：
the act was given the Royal Assent.
此法案已获国王（或女王）批准。
no obj.
- express approval or agreement, typically officially（多指官方）赞同, 同意：
the Prime Minister assented to the change
首相同意这一变更
with direct speech 'Guest house, then, ' Frank assented cheerfully.“那就去小客栈吧。”弗兰克欣然同意道。
词源
Middle English: from Old French as（s）enter (verb)， as（s）ente (noun)， based on Latin assentire, from ad- 'towards' + sentire 'feel， think'.