词汇讲解：
1. publicity n. 公众的注意, 众所周知；宣传, 宣扬
例句：The singer star's marriage got a lot of publicity.
这位歌星的婚事引起了公众的关注。
2. category n.种类, 类别
例句：The strings are a category of musical instruments.
弦乐器是乐器的一种。
3. pregnant adj. 怀孕的, 怀胎的
例句：She is pregnant with her first child.
她怀了第一胎。
4. attempt vt.试图; 尝试
例句：He attempted to get in touch with them but without success.
他试图和他们联系, 但未成功。
5. widen v. 放宽, 加宽, (使)变宽
例句：Her outlook gradually widens.
她的眼光渐渐开阔了。
6. approval n. 批准, 认可; 赞成, 同意
例句：The audience showed its approval by cheering loudly.
观众高声喝彩表示赞许。
7. seek v. 寻找; 探寻
例句：We sought long and hard but found no answer.
我们作了长期的艰苦探索, 但没有找到答案。
8. surround vt.包围
例句：The firemen surrounded the burning building.
消防队员包围了熊熊燃烧的建筑物。
9. dreamy adj. 轻柔的
例句：They talked to each other in gentle, dreamy
voices.
他们轻声细语地交谈。
10. exchange vt.交换, 互换；交流
例句：You two boys exchange places.
你们两个孩子交换一下位置。
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