gain用作不及物动词时后接介词in表示“在某方面有所增长”; 后接介词on或upon表示“接近,胜过或赶上”。
His books have gained in popularity in recent years.
近年来他的书越来越受欢迎。
The country gained its independence ten years ago.
这个国家十年前赢得了独立。
My watch gains two minutes every 24 hours.
我的表每24小时快两分钟。
Her novels have gained in popularity over recent years.
近年来她的'小说渐受欢迎。
Students gain college credits which count towards their degree.
学生获得的学分将计入其学位积分。