您要查找的是不是：
- 半Fredholm算子Semi-Fredholm operator
- 算子下半Fredholm序列operator lower-semi Fredholm sequence
- 算子上半Fredholm序列operator upper-semi Fredholm sequence
- 半semi-
- 半年half a year
- 半天half of the day
- 半小时halfhour
- 算子operator
- 半角DBC case
- 半月half-moon
- 上半first half
- Fredholm算子Fredholm operator
- 半场half-court
- 半透明translucent
- 一年半a year and a half
- 半个half
- 半路midway
- 下半second
- 后半second half
- 下半场the second half
