检索 s s c i qi kan yi nian zhi jian suo yi ci
一科一辅 yi ke yi fu he qi kan san nian ji
发表 yi nian fa biao ba pian tong yi qi kan
写完 yi nian neng xie wan yi pian qi kan ma
引用论文 yi nian yi juan qi kan lun wen yin yong
中国人 zhong guo ren de yi nian da yi qi kan