The notes for glossary (词汇) are very exact and particular, which could help readers to break the language so directly and effectively.
A. defence
B. function
C. response
D. barrier
网友回答
A. defence
B. function
C. response
(答案→)D. barrier
解析：A. defence防御B. function功能C. response回复D. barrier障碍；句意：词汇注释是非常准确的和详细的，它有助于读者直观地、有效地冲破语言的障碍。故选D.