prep. 关于；大约 adj. 在附近的；四处走动的；在起作用的 adv. 大约；周围；到处 n. 大致；粗枝大叶；不拘小节的人
参考例句
1. The young girl had a gold chain about her neck. 那位少女脖子上戴着一串金项链。
2. When you come to think about it. 当我们开始考虑垃圾问题时。
3. How about going to the zoo then? 让我们下个周末去动物园吧！
英英解释
adj.
1. on the move
2. (of quantities) imprecise but fairly close to correct
3. all around or on all sides
4. in the area or vicinity
5. to or among many different places or in no particular direction
6. in or to a reversed position or direction
7. in rotation or succession
8. (of actions or states) slightly short of or not quite accomplished
