The sun himself is weak when he first rises, and gathers strength and courage as the day gets on.
太阳刚升起也是微弱的，但会随着时间累积力量与勇气。
expound verb
[ɪkˈspaʊnd]
add details, as to an account or idea
详解，详述，阐述
例句：
The speaker has an hour to expound his views to the public.
讲演者有1小时时间向公众阐明他的观点。
