北京第二外国语学院学报
journal beijing international studies university
MHC Ⅱ类B基因第二外显子
second exon of MHC class Ⅱ B gene
MHCⅡ-DRB基因第二外显子
second exon of MHC class Ⅱ DRB gene
第二、第三掌背动脉
Second or third dorsal metacarpal artery
第二语言词汇
second language vocabulary
第二语言词汇学习
second language vocabulary learning
第二语言教学
teaching Chinese as a second language
second language teaching
第二语言习得
the second language acquisition
SLA
Second language acquisition
2(superscript nd) Language Acquisition
foreign language testing
second language learning
第二语言习得模式
model of second language acquisition
第二语言写作
Writing in second language
第二语言学习
the second language acquisition
second language learning
Second language acquisition
the second language learning
第二语言之习得
Second language acquisition
克拉申第二语言习得理论
Krashen’s second language acquisition theory
英语第二课堂
english extracurricular activities