重点讲解:
1. for example 例如;比如;
例句:For example, studies have been done on windbreaks in parts of West Africa.
例如,研究小组已经完成对西非部分地区防风林的研究 。
2. how often (用于询问或说明某事发生的频率)(多)常;
例句:How often do you water these trees?
你多久给这些树浇一次水?
3. or so …左右;…上下;
例句:There were a hundred or so hotels in the vicinity of the railway station.
在火车站附近大约有100家旅馆 。
n. 铅版,陈腔滥调,老一套
vt. 使用铅版