His best friend was killed by police under extremely questionable circumstances.他最好的朋友在极其可疑的情况下被警察打死了。It is questionable whether the expenditure on this project is really justified.该项目的开支是否真的合理还未可知。He has been dogged by ...
The clone anergy and clone deletion are considered as the major theories of the immunotolerance mechanism.以往观点认为,T细胞 免疫耐受机制主要有克隆无能和克隆删除两种学说.This involved the deletion of a great deal of irrelevant material.这包括删除很大一部分不相关的...