come about,occur to,bring in与happen的区别及意义尽量答的详细一点,急

come about,occur to,bring in与happen的区别及意义尽量答的详细一点,急
come about,occur to,bring in与happen的区别及意义
尽量答的详细一点,急

come about,occur to,bring in与happen的区别及意义尽量答的详细一点,急
come across
v.
来到,偶遇,给人印象深刻
不期而遇,交付
happen
[5hApEn]
vi.
发生,碰巧,偶然
v.
发生,恰巧,偶然发现