本集核心英语单词及例句：

1.undefined (adj.)不明确的
Tina believes her fashion sense is still undefined.
Tina认为她的时尚感觉仍不明确。

2.concise (adj.)简明的，简洁的
Your movements during exercise should be slow and concise.
在运动中你的动作应该是缓慢和简练的。

3.confined (adj.)狭窄的；有限制的
This phenomenon is not confined to greenhill.
这种现象不仅限于格林希尔。

4.maneuver (vt.)机动；演习；调遣
Her behavior leaves a great deal of room to maneuver.
她的行为给运作留下很大的回旋余地。

5.exploit (vt.)开发，开拓
The workers feel like they are being exploited.
工人们觉得他们被剥削了。

6.vocabulary (n.)词汇；词表
The extent of Dr. J's vocabulary indicates the high degree of his intelligence.
Dr. J对词汇的把握程度反映了他的高智力水平。