1 [I,T] fasten sth (up) to close or join the two parts of sth; to become closed or joined 系;扣;关紧 ·
Please fasten your seat belts.请系好安全带。Fasten your coat up -- it's cold outside.把大衣扣上,外面很冷。My dress fastens at the back.我的连衣裙是从背后扣上的。
2 [T] fasten sth (on/to sth);fasten A and B (together) to fix or tie sth to sth, or two things together 把(某物)系于某处;把(两物)系在一起:
Fasten this badge on your jacket.把这个徽章别在你的上衣上。How can I fasten these pieces of wood together?我怎样才能把这些木头捆在一起?
3 [T] to close or lock sth firmly so that it will not open 紧紧关上或锁上:
Close the window and fasten it securely.把窗子关上,拴牢。