protection for sb 保护

protest against sth 抗议

against sth provision for/against 准备

pull at/on sth 拉,拖

ratio of sth to sth 比率

reaction to 对……的反应

reason for 原因,理由

reference to 提及,参考

regard for 对……的注意,尊重

remedy for 补救,解决

reply to sb/sth 对……的回答

reputation for 名声,名气

request for sth 要求