英语学堂：一缕阳光 A ray of sunshine

The existence of nearly all life on Earth is thanks to the rays of light emitted by the sun. The sun's rays, in moderation, are beneficial to the human body, which produces vitamin D. A lack of sunlight, however, can sometimes lead to a condition known as seasonal affective disorder (SAD), a mood illness which can lead to depression.
几乎地球上所有的生命都必须依靠太阳发射出来的光才能生存下去。

适度接受阳光照射对人体是有益的并能帮助人体生成维生素D。

人体缺少阳光可能会引起一种被称为“季节性情障碍症(SAD)”的情绪疾病。

这个疾病有可能导致抑郁症。

短语
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。

例句
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.
请注意
短语 under the sun 字面意思是在太阳底下，比喻世上所有的东西。

例句
Matthew seems to have an opinion on everything under the sun.
You can find almost everything under the sun in that shop.
更多英语学习方法：
广州企业英语培训/zt/city_guangzhou.html。