当你最不抱期望时，研究的坚持往往会带来回报。
Persistence in research often pays off when you least expect it.
I often take exercise. Why only yesterday I had breakfast in bed.
Energy security is a crucial part of national strategic security, and we must firmly keep it in our own hands.
你唯一应该努力超越的人就是昨天的自己。
Though debts are condemned in the financial world, the world of friendship and love may perversely depend on well-managed debts.
The sea gives us life, and it's our duty to give back by protecting it.