a ray of sunshine 用于形容某人或事在艰苦、困难的情况下给他人带来欢乐和希望，就像一缕阳光。
- After failing both my exams, going to see my mum has provided a ray of sunshine.
- It's been a really terrible few days, but he's been like a ray of sunshine to me.
- The new client provided a ray of sunshine for Steve's business on Monday.
值得注意的是，短语 under the sun 字面意思是在太阳底下，比喻世上所有的东西。
- Matthew seems to have an opinion on everything under the sun.
- You can find almost everything under the sun in that shop.
