1、discover
发现(以前不知道的事实)
She discovered that they'd escaped.
她发现他们已经逃跑了。
I discovered I was pregnant.
我发现自己怀孕了。
(第一个)发现
the first European to discover America.
第一个发现美洲大陆的欧洲人
In the 19th century, gold was discovered in California.
19 世纪时，在加利福尼亚发现了金子。
初次接触(某活动并乐在其中)
I wish I'd discovered photography when I was younger.
我要是早点接触到摄影技术就好了。
Discover the delights and luxury of a private yacht.
体验私人游艇的乐趣和奢华。
2、subject
主题;题目;话题;题材;问题
It was I who first raised the subject of plastic surgery.
是我第一个提到整形手术这个话题的。
the president's own views on the subject.
总统在此问题上的个人观点
(批评、学习、调查的)对象
Over the past few years, some of the positions Mr. Meredith has adopted have made him the subject of criticism.
在过去的几年里，梅雷迪思先生所采取的某些立场使他成为了批评的对象。
He's now the subject of an official inquiry.
他现在是官方调查的对象。
(知识、研究)领域;(尤指)学科，科目，课程
Surprisingly, mathematics was voted their favourite subject.
令人惊讶的是，数学课被选为他们最喜欢的科目。
a tutor in maths and science subjects.
辅导数学和理科课程的家教