回上一层第12部 第九课 --- 请重复跟读，直到可以於声音档的留空之间唸完整句為止；熟练之后您必将可以 "脱口而出" 地说出标準的美式英语
- wear out
- My hat was worn out.
- Melvin was worn out after a whole day of shopping.
- wipe out
- I am not sure if this will wipe out the termites entirely.
- The city's population was wiped out in a few days.
- with reference to
- We are holding a discussion with reference to the copyright issue.
- with regard to
- With regard to the quotation, we will need to verify it once more.
