That's the thing about unhappiness. All it takes is for something worse to come along, and you realize it was actually happiness after all.

语音讲解
单词发音
unhappiness n.苦恼；忧愁
actually adv.实际上；事实上
连词发音
all it takes is
and you realize it
after all
轻读重读
重读：unhappiness worse come along realize happiness
弱读：the it is for to and you it was

词汇讲解
链儿1：That's the thing about unhappiness.
XX其实是这么回事。
That's the thing about...
类似链儿：one thing about XX
链儿2：all it takes is...
只要...就够了
All it takes is a little common sense.
只需要一点常识就够了。
All it takes is practice and focus.
它所需的全部就是练习和专注。
链儿3：come along
①come along! 快点！
Come along! We're all waiting for you!
快点儿！我们都等你呢！
②to appear or arrive 出现
Take any job opportunity that comes along.
抓住任何随之而来的工作机会。
③to go to a place with someone 跟着走
We're going into town – do you want to come along?
我们要去城里——你要一起去吗？
链儿4：after all
终究；毕竟
He failed after all.
他终究还是失败了。
He wrote to say they couldn't give me a job after all.
他写信告诉我他们终究不能录取我。
It was their country, after all.
毕竟是他们的国家。

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