New Words：

undiscovered ['ʌndis'kʌvəd] adj. 未被发现的
discovery [dis'kʌvəri] n. 发现；发觉

Sample Sentences：

New scientific discoveries are being made everyday.
I spent most of my time searching for undiscovered treasures.
The drug is not a new discovery ─ it's been known about for years.
The discovery of a child's body in the river has shocked the village.

scientific [.saiən'tifik] adj. 科学的

New Words：

discover [dis'kʌvər] v. 找到；查明；（第一个）发现；了解到
rediscover [.ri:dis'kʌvər] v. 重新发现；重新找到

Sample Sentences：

Who first discovered America?
It is time to stop and rediscover the "good life.
Columbus is said to have discovered America in 1492.
We discovered this beach while we were sailing around the island.

New Words：

rather ['rɑ:ðər] adv.相当；宁愿；有点儿
rather than 而不是

Sample Sentences：

I'd rather walk than take a bus.
It was rather a difficult question.
She fell and hurt her leg rather badly.
I think I'll have a cold drink rather than coffee.

New Words：

physics ['fiziks] n. 物理学

Sample Sentences：

I prefer chemistry to physics.
The famous physician had to make a tough decision.
Physics is one of the most difficult subjects this term.

New Words：

recover [ri'kʌvər] v. 恢复；康复；复原；痊愈

Sample Sentences：

You'll recover in two or three days.
He's still recovering from his operation.
The police recovered the stolen jewellery.
It took a long time for him to recover from a bad cold.