我們都知道silver是銀色的，
lining是線，裡襯，
那麼 a silver lining只是銀色的線的意思嘛？
Katherine:Look at him.He’s out like a light already.
Dave:That’s what a long day of fishing does to you.
Katherine :Yeah well he’s gonna need all of his energy.For our big hike tomorrow right?
Dave:Actually I don’t think I’m gonna go with you guys.My knee’s been kind of bothering me.
Katherine :Okay well then why don’t we wait till the next day.And see how you feel?
Dave:No no it’s fine.i’m just gonna hang out here.Besides it’s such a romantic hike.You guys should do it alone.
Katherine :You always have such a good attitude.
Dave:Do I?
Katherine:-uh-huh.It seems like you take everything in stride you know?Like you just naturally find the silver lining.
Dave:Yeah I wish it were natutal.
I had to teach myself to be this way.
看完視頻大家大概了解到a silver lining 的意思了吧？
現在我們一起來看下吧！
silver是銀色；
lining是線、襯裡，
silver lining看字面意思是銀色的邊、銀色的線
它的來源很簡單,"Every cloud has a silver lining."，當太陽被雲朵遮蓋後，邊緣會出現一條銀色的光線，這樣給你的視覺感受是，烏雲內部黑黑的，周邊一圈卻是亮亮的。
每一朵烏雲周圍都有銀邊，因為烏雲背後有太陽，意思是不幸或失望中的一線希望。
If you talk about a silver lining, you are talking about something positive that comes out of a sad or unpleasant situation.（柯林斯英漢詞典）
所以我們就知道啦，a silver lining 壞事中的好事，不幸中的一絲希望。